I am maybe interested to buy 5S LiPos, because I were planning 6S batteries to hongnor X1CRT Pro truggy, and it was almost too much.

So 4S or 5S would be good, and Polyquest have good batteries I see.

If I don't find good Polyquest batteries, I will maybe take Zippy-H, thats my plan.

Medusa 60mm or 70mm sounds good to that car. If I have enough money for motor, Neu would be best choise, 1515 1Y .