Being you are in zone 7 and must bring these plants in and out of the house (I assume your heated room is in the house), you would do best with fruits that can either take the cold or ones that can be easily manageable so you can bring them in and out. While many of these will be fine when young, you may start to run into some issues as they age unless you start to dedicate a lot, errr...most, of your time to them. Adam has a good list started though the mulberry may be a bit challenging and the lychee and longan, over the years, will also require a lot of attention and getting really skilled with your pruners.