Some people won't like this but my advise is avoid Hobbyking stuff like the plague. I've been bitten a few times and it simply isn't worth 'saving' your money on HK stuff because you'll end up buying something else shortly afterwards!

If you can afford it the very best ESC for that setup would be a Tekin RSX however if funds are a little tight then the Hobbywing Xerun 3.1 120A would work beautifully with that setup. I run Tekin now but have ran Hobbywing stuff in the past and it is very good.

Others say Castle is ok but I've had issues with Castle stuff as well. My preferred brands now having tried most kit out there is Tekin, Airtronics, Speed Passion and Hobbywing. Go with any of those and it is very unlikely you'll have any issues.