Was thinking of a single motor 8s rigger build using a modded Zippkit Twin 45 hull. Was looking at the TP 40" x 100" motor, 1090 kv. But I was wondering whether I should go up to their 56" x 92" motor, 888 kv? Any thoughts? I'm looking to do 70 mph on a 1 mile course. (Heat race boat.) Total mah would be 5,000. (Two 4s packs in series.) Thanks.