A sand on site hardwood will outlast you. The answer depends your budget, and if you can live with a narrower plank. You CAN add a wider plank to new areas, matching wood species and sanding/staining all to same. But I wouldn't create a large disparity in plank size, ( strip and a five inch for example ) and certainly not a change in species. A basement need not match a first floor in any way. A second floor? Also need not match the first floor. Over time, a hardwood, pre finished or sand on site and area rugs is my own favorite. Just as much warmth where needed, unity in the "base" allowing for decor changes to suit growing kids or your own master bedroom, and never having to suffer the rip out of an edge to edge carpet up the road. Bedroom and closets get dirtier than any other area in your home. It's where you spend the most time in bare feet, leaving behind oils that attract dust to be ground in. Cleaning ? Certainly ! But over time............UGH. Pergo anything? Nope. Not on a first or second floor. A pre finished 3/4 inch hardwood? Fine.

I love LVP and used it in my entire second home down south. I have seen people continue it in the bathrooms, but I am not a fan. In one case it was in a small condo and I guess it gave the allusion of a bigger expanse because it went from hallway through to the bathroom. In the other situation, the tile in the bathroom tile floor was ugly and this person used it as a quick fix and went right over it. So, yes to tile in the bathroom.

Sounds like the engineered floors may be Brazilian cherry. Do you have photos of any fireplaces that you'd like to coordinate with? Natural finish (no stain) red oak wood floors are classic. Colored stains go through trends. A medium brown finish is another classic look. White oak (different from red oak) is having a revival at the moment with a no-stain or slightly white finish.

If you did it the first time ther eis no reason you can't just choose a different sheen in the same product I would think