The Sukhoi - I may yet put one together - The real problem for me is that the fuselage -tho very pretty is much heavier in the aft end - than the CAP.
I did some quick paperwork -which said a heavy engine is reqd to balance -
that is not what I wanted -
If I do one - I will strip the belly pan - and redo all of that -
My recent 33% H9 models are 22-23 lbs ready to fly - with NO carbon pieces and NO Duralites -
with the 80 single on tuned setup - they are VTO - really .
Getting overkill power was never the problem - -The wing loading tho needs to 30 oz or less- for best snap recovery and low speed flippity flop stuff - at our altitude.
You will end up probably at 25 lbs plus - and it will work just great -at sea level.
It will also fly most stuff very well here -It's the 2-3 lb difference that makes stuff here feel like it was at sealevel.
1960 - lets see -I just got out of the army - had a TR3 A - modified -to B engine