not sure why they list it as an option, its a bad combo, it wont fly well, that 72 inch plane is quite small. will a 20 inch prop even clear without using big tires or taller gear?

You can make it all work, its just not an ideal combo for high performance pilots.

edit
just went on their site, and sure enough they are flying it with a 30cc and 20 inch prop, it does have a 1000 squares, which is more than the older 72 inch models found in the past from other vendors. the 35 is a boost in power over the 30 though.
is the cowl all going to work with hub distance etc? might be a lot of shoe horning to fit it in.