I have a few ideas in my head, but I'm not sure which one to do. Dere they are:

Antonov AN-2 TB-2MC

Note that it'll be a complete rebuild, not just a modified version of my already existing AN-2. Also probably won't have an interior. Also, it's stall speed is about 5mph. ;)

Maule Orion

Will have an interior, and will be cool.

English Electric Canberra

Will be a small project, probably only a week to build.

Carbon Cub

Definitely will have an interior, will be cool.