Welcome to the FT Forums Ethan! Saw your video and thought it was a great vlog type video. Just as a suggestion, if you are going to use the larger brushless motors that have lower KV compared to the smaller ones on your racing quads with the higher kv motors, you'll need larger props, as you had guessed, which won't work so well on the FT Mini Arrow.
What about building one of their older flying wings like the FT Versa? It'll fly well with those motors you have in either a pusher or tractor setup, and also can accommodate an 8 or 9" prop.
They might be a little more expensive to build ($2 vs $1) if you build by the plans, but I've actually built/cut the regular versa wing out of one sheet of foamboard for $1. You just have to layout the parts a little differently.