<span style="font-family: Comic Sans MS;"><span style="font-size: larger;">Your Cub is suppose to be 8.5 lbs on glow. For me I would go with nothing less than a 4S set up. This will give you good power and with the right motor we are possibly turning a nice 14x7 prop. Motor I am thinking of something like the AXI 4120/14 or one of the Chinese 4260 of about 650KV. Battery size I will say go with no less than a 3,700 mAh pack.

But what joo recommends is nice ... a 5S 4,900 mAh pack (this will help ge the nose heavier). For motors you can look at the DualSky 4260-6, Hyperion 4025, AXI 4120/18 all are around the KV that joo says.

The ESCs from Turnigy work great and they have a built in UBEC so you can just use the ESC to power your servos.

Caveat: think carefully before you purchase the packs, what will you use them in when you move on. For me I am using Rhino 20C 5S 4,900 packs as when used in a 10S set up they are perfect for 180 sized planes and on its own it will haul a 40 sized plane out of sight!</span></span>