Ah, Burnsi from rcindependent, right?
I also got a LST, converting it to Brushless, and will run 5S (maybe 6S) Zippy Flightmax 5000mAh 30C, I'll order them this week. I already got motor and ESC (MMM 2200kv combo)
So if you wait a few weeks (2 or 3) I can tell you how those 30C LiPos will perform... But if you don't want to; just buy them!