Hard to comment on the problems with your concrete without seeing it. All I can say is, with proper prep and attention, there should be no problem with installing a wood floor in your entry. It sounds as if it will require demoing the existing concrete and building that area up again properly. I've done it before. As for lighter woods, there are many. There is natural red oak, white oak, ash, birch, maple, pine plus many imported woods like Amendoim.
http://www.hardwoodinstaller.com/hardwo ... -solid.htm
Browse around here on this website and then go to a show room. As far as matching whitewashed cabinets, those fell out of favor years ago so you may have a hard time finding a prefinished floor that will match. However, you could use unfinished flooring and have it sanded and finished on site to match the cabinets