You sound like me. I like the look of interior trim painted white but have trouble with the idea of painting it. Also, since the trim is usually in high wear areas wouldn't it tend to chip and need repainting also. I have heard it is best to go with a oil based paint for trim, more durable maybe. I know someone who had her trim removed a painted with a spray type application then re-installed, I think she called it enamaled. Also, I a relative recently purchased a home, newer build, all them trim was stained white rather than painted, it really looked nice, I thought it was a good compromise between paint and stain.

If you are using acrylic paint, it's very hard if not impossible to brush out a door, or any large surface, and have it come out looking good. You should either roll the door and leave it or roll the door and brush out the rolled paint. Modern day paints just dry too fast. Aura is a good product for rolling and the Aura extender you can buy to increase the open time is also good. Regal is not really a good product for rolling...it does not self level as good as the Aura. Also, this does take practice. DIY'ers and homeowner painters have 2 tendencies. They do not put enough paint on and they overwork the paint. The key to getting paint to look good is to put the paint on heavy and then leave it. After 15 second have passed, do not go back into an area that you have already painted. Try a 4" Wooster Pro Dooz sleeve, 3/8" nap or even 1/4" if you are afraid that 3/8" is too big. The pros always tend to use bigger naps than the homeowners. Try not to get frustrated...painting these days is hard! This is why I try to spray as much as I can.

If there is old paper to remove, it absolutely must come off first! Walls sould be cleaned of paste, any damage spackled, and possibly new pre-wallpapering sealer applied. Painting of the ceilings would be next, followed by painting of the woodwork. Wallpapering would be last. You don't want to possibly damage brand new wallpaper by splashing paint on it! Also, cutting in paint to new wallpaper would be much more time consuming than doing the painting first and being able to simply paint up onto the wall a bit.

Are you referring to baseboards for the flooring? If so, seems you'll be either staining or painting. If looking to go rustic you could look at like 1x4 lumber trim to work with?