I've got one of those! It is a truly awesome kit, and I totally recommend it. Your imagination will go nuts when you start putting the parts together.
You'd definitely have to redo all the hatches for 25/28mm though, as they well be very noticeably too small, even for squats. It'd be fantastic for 15mm though, and with the hatches redone it'd go perfectly with Hasslefree's Kindred.