What a lovely window you have. And the trim on your eaves suggests a really great old house. I'm not able to give any advice to you, but I can understand why you'd want to keep those outstanding arched storm windows. Making new ones would be very expensive. How many windows are there? Would you need to do all of them or just the ones on the upper reaches of your house? How heavy are they? All about the same? How do you lower them down to the ground? Do you have room inside the storm window to attach a retainer to keep it from falling when the latches are released? My word, it would be an accident waiting to happen to carry such a window down a 30 foot ladder! How wide or high an opening do you have when your regular windows are open? Would that dimension be adequate to bring the storm window through it? I'm not sure if I understand what Bulldinkie said, but I should hope something could help solve the problem. Good luck. I understand your concern about mobility issues.

One of two things... Try gently heating it with a heat gun. You don't want to get the heat gun close enough to bubble it, only enough to make it pliable so that you can scrape it off. The other thing would be to freeze it with liquid nitrogen and then pop it off with a sharp wood chisel. Not recommended as you can really do some damage to yourself if you get that stuff on you.

Always helps to know exactly what you're dealing with. Can you call the installers and ask what specific product they used? Then, I'd suggest getting the carpet professionally cleaned. Knowing what the stuff is will help them to decide what products to use to remove it. I'd be really careful trying to remove it myself because of the risk of making a worse mess than what you have now.

Of course, it is possible to remove the paint from those benches, given enough time, elbow grease and money. I would test with a heat gun and scraper and try to get off the majority of paint with that approach. Next I would move on to chemical stripper before sanding. This is a major effort project but won't pay off with a commensurate amount of curb appeal. There are lots of potential projects and many of them will have a better return on your investment. DIY labor has a value and you need to spend some time thinking about which projects are a good use of your time and effort. With the benefit of 20/20 hindsight, I would approach projects at my house differently so I am encouraging you to read the prior comments representing many years spent on numerous projects. It is your house so do what you want but I would certainly suggest a small test patch before total commitment