That 10s setup is great
I used that same combo on the Prototype --- 130+mph is no problem, plus really great vertical.
Only drawback is flightime. I ran 10s 4200's and set my timer for 3:40.
I guess you can run 5000's and set for 4:00 but the weight really adds up at those cell counts.
I'm really looking forward to my 8s setup!!! This thing hits a speed barrier right around 130mph... takes a ton
more power to make it go a little faster. It was never designed to compete with the Electras and such out there; just an economical badass 90XL-sized jet.