Brushless help please

[Feight]

Hi, I posted my thread in the electrics section when I had intended to post it in this section.
Probably the result of a lack of sleep and way too much coffee.

http://www.oople.com/forums/showthread.php?t=37870

I'm quite tempted by the tekin, it's one of the two systems I've really been looking at, the MMM is the other that floats my boat.
I was just thinking that I'd probably need to cram 4s under the shell to make 1700kv be worthwhile.