without wishing to start a servo brand snobbery debate, as thats happened enough times on RCU.

The tailerons are pretty large on the JL F15. I wouldnt be taking any chances. I dont know how much the 965MGs cost, but even if the difference between them and the JR 8611s was $100, for peac of mind that youve got the best kit you can, on a $2000 dollar airframe id go with them.

Good luck with the EDF conversion, which fan and motor are you thinking off? Im assuming you realise youll need two otherwise youll have a slouch of an aircraft