I have an aluminum clad storm door that can be switched out for a screen in the summer...honestly I've never done it, none of us feels like unscrewing that large plate of glass and fooling with it. So it's glass all year. OP, my neighbor has one of those screen doors from the link. They have it painted in their accent color (I guess it is the third color on their exterior, it's an apricot type of color on their house is sage green); it looks so charming. Plus there is something so summery and homey about the gentle slap sound that wooden door makes when the kids run in and out.

First, sliders aren’t very secure, so almost any French door is going to be more secure. Years ago we replaced sliders w/ Anlin French doors in the DR. They use a multi-point locking system that is way more secure than the sliders. Ours are outswing, too, b/c if they were in-swing they’d be too close to chairs on that side w/ someone sitting on the chair. We got operating sidelights so we could have air flow w/ doors closed. I didn’t want a screen door for ease of entry/exit & looks w/ V-grooved glass. The sidelights are screened.

Personally, I would spend the money on any structural and integrity related things, then budget on the stuff you can see...appliances, cab's, etc. One of the hard things when you redo an old home is not knowing what to expect until the interior walls are removed. We found that out even on our 30 year old home. You're a huge chunk of money ahead of the game by having the previous owner redo the electrical systems. Expect that much of the plumbing will have to be redone, as well. You should be able to salvage, reuse, or save much of the stuff already. Try to rescue as much of the baseboards and trim as possible. You can sand it, repaint it, or have it stripped and stained. Windows in an old home are quite controversial. It's up to you, but check with your local ordinances to see if in the process of renovating you have to bring the windows up to code in terms of efficiency. You may be able to save all the old sashes and frames, and have all the glass replaced with double pane low E with argon. I've seen that done in old turn of the century condo loft conversions in midwestern cities. It seems like it would be quite a bit more expensive than replacing the windows. There are cheap sources for flooring, but be very careful with them...many use a sub grade of wood, or the wood comes from questionable forestry practices around the world. Cheap bamboo from China is particularly bad. Check with Habitat for Humanity for second hand building materials stores. Here in Seattle we have one called Second Use, which is basically a consignment store where the proceeds can be directed to Habitat. Some incredibly great stuff from old houses are there, and they even accepted my 30 year old solid fir front doors. Many cities, big and small, have second hand material stores. Plus there are old building supplies available online...I've seen old turn of the century mantels and doors sold on the internet. Kitchen and bath cabinets can eat up the biggest part of your budget. Do what you can live with, but remember that structurally a 5K IKEA kitchen will be just as sound than a 40K custom kitchen. You're just more limited in cabinet sizes and door finishes. Do your hardest shopping for cabinets, both in retail and online. And don't overlook all the small custom cabinet makers in your community. Many times they are the same price or cheaper than the big name brands. Plumbing and lighting fixtures can be purchased online with huge savings. Your plumber or electrician can also let you buy direct from their wholesale supplier at cost...you have to do the legwork, pay the tax, and pay the company directly. You just have to ask...some want to make their 20% markup, some don't mind passing the savings onto you. And check to see if there is a building materials supply house near you where all the contractors shop. Many times you can start an account yourself...some outfits require you to have a license, some don't. You'll get about 40-50% savings on building materials, carpet, tile, flooring, etc. THey usually go by names such as Builder's Supply Co. If you are doing an extensive renovation, spend the money on a good set of architect plans, even if you're not moving walls. You'll probably need it for the city/state permits, and your GC or subs will need it for construction. Sit down and be very realistic with yourself about what you can do personally to save money. Demolition sounds like an easy job on paper (just swing your sledge hammer, have fun...), but it's a dirty and very dangerous proposition. Painting can be fun, but exterior painting requires a skill level and knowledge, and an abilility to climb scaffolding or ladders. Framing new walls or windows is a lot more technical than it seems. And tiling a bath has to be done correctly or you'll suffer the consequences down the road. In other words, hire good people to take care of the structural parts of the renovation. You can general contract this yourself if you have the time. We just did a total house remodel, GC'd it ourselves, and it took way more time than we expected, but it wasn't as hard as I expected it to be.

Yes but it is tricky since there are so many variations. Many companies make aftermarket hardware that fit other doors- Emtek is one. You may find it easier to find out who manufactured your doors and buy the hardware directly from them