We are redoing a small 1980's townhouse kitchen. It's an L shaped kitchen with a two-level island (actually it abuts the window wall over looking the street.) I have placed 2 chairs to use side by side at the lower level, which is 15" wide. And I like this set-up very much because I have a hard time climbing up on a stool or even barchair. I use the higher side, which is 24" wide, as prep area. Thinking of re-sale, which could be in 3-5 years, should I install a one-level island?