Seems STR is a lot more important this season. Id keep that in mind, dont make him too small. Im a long term builder so i say pump speed up to 40 with new creater and first 15 SP. If you really want to be a real speedster get it to 77, while training SPD/AGI. Use the training to get you over your first lvl of cap. I.E. train up to 95% wait til youre at 49 bam youre at 50, wait til 59 boom 150% value on your training in the previous cap range. If you time it right you can use your natural gains to get natural/training increases. at lvl 68 that nets you 8 SP worth, and at 75 it get you 10 SP value. Thats the kind of building that gets you a "Speedster" rating, aka 110+ SPD.