I'd go 30-35C at the lowest the ones you linked are 25C
http://hobbyking.com/hobbyking/store...tible_USA.html don't seem bad, but are on backorder (longest I waited was 2 weeks) they are also a tad smaller (physically) than the ones I used in my flux so they should fit no problem. only find it kinda weird they only have then with a traxxas connector...