Racing battery choices

[zeropointbug]

So I am trying to decide what size lipo to get for racing, in particular, those 30 min mains. I have come to three choices based on what runtime I was getting with my old Hyperion G3 vx, 25 mins for a 6s 4200mah 35C pack.

1. Thunder Power RC G6 Pro Power 65C 2250mAh 6-Cell

2. Thunder Power RC G6 Pro Performance 45C 2700mAh 6-Cell 419 grams

3. Thunder Power RC G6 Pro Performance 45C 3300mAh 6-Cell 515 grams


The small 2250mah would need 3 sets of packs for 10 mins running time each, which any lap time savings might be negated by the battery swapping TWICE. I am not sure on the 2700mah, whether it would last 15 mins running or not, it would be super close, and maybe too risky? The 3rd option seems like a solid one with almost 20 mins running time each, so only one battery swap during a race.

Anyone with some veteran racing experience is happily welcome to put their two cents in on what you think of each. BTW, I run pretty smoothly, fairly constant throttle over the whole lap, besides the straights.

thanks