correct ....at speed..and u dont need stern lift.
Doc, also plan on 1 inch spacers maybe even 2 inches ! depends on props...i would also go with 1:62 ratios..not 1 :50...since u win races in the corners and at the start the straights are to short in a bracket class !
I for my part run a 1:68..but with the power and twin engines set up like in yours..its good to go 1:62 !
if used on boxes, then no or only 1 inch spacers !
4 blade props...maybe 5 blades..but it all depends on diameter and rake !