Hello Chris ,

I'm thinking this is a OS 61 FX and not a fsr??

The widebody 60 would be good choice with a 90 fx from what Shaun told me ( areoworks )
Could also be used for IMAC with that power choice.

Ive seen the GP Venus fly with a OS 65 la but add alot of lead in the tail.
Also with that engine you need a bigger fuel tank.
Stock tank is too small.
Hope this helps you,
Frank