Sorry pal but you are going to be very disappointed trying to get a four star to 3D. I bashed two 4* 60's and went to extremes on one. Doubled rudder size, changed hinge line on the elev with more than 60% control surface, also added counter balancers, left out one wing bay and built light as possible. Came out a little under seven pounds with a saito 100. Ailerons were left alone as they run full length and provide more than enough. CG was set 3/4'' behind reward recommended range.
It would hang on the prop easy and do knife edge loops but the buck stops there. It would not do FLAT spins upright or inverted. It would not harrier at all, elevators stunk, water falls were no good and you are not going to get a knife edge spin either.
Go to the kit building forum and search for "kit bash 4*" as many folks have done different mods to theirs.
My advice, don't waste your time/money trying to turn a family sedan into a hotrod just fly the little 40 till your bored and then get a better plane for 3D. You could add to the tail surfaces to help hovering but just don't expect much more.