i have this on my build list as well. i think the 9" props may be a bit big for the build, not for your motors, but for the build. may look a little big for "scale."
i plan on using 2x Multistar 2213-980kv motors w/ a 20A esc and 7x4x3 blade props with a 3S-2200. i have used this motor/esc on a FT Cub with a 8" prop and it does really well, so i think 2 of them on the Bronco will be perfect.
good luck with the build. i have mine printed but haven't tiled them yet.
laters,
me
