Cole,
You didn't mention what size ultra stick you had, but I have a US .60 with a Saito 1.00 and its awesome. For control, I have the new JR XP6102, with the standard 537 servos. These servos are definitely strong enough, the control surfaces aren't huge. For the Rx, I just used whatever came with the XP6102. I also found it helpful to mount the servos in the tail. For an engine, if you have the .40, go with the new Saito FA-82, or if that's too expensive, go with the FA-72. This is a really great plane, it deserves a Saito.