1/8 Buggy Advice Needed

Thanks for the feedback. I wound up going with the following:

RC8 (I flipped the center brace to the left side for better clearance of the motor fins).
Quark 125b w/ RC-Monster Heat Sink
Neu 1515 1y
RC-Monster Motor & Top Plate from RC Product Designs
RC Product Designs RC8 Battery Tray
CC BEC
4s 5000 Lipos from True RC (Hopefully the perform, couldn't beat the price)
Hardened Pinons from RC Monster - 14 through 18 teeth

Everything seems to be working together ok. I will put pics up this week. I am just waiting on the battery box and the lipos which I should have today or tomorrow to see how she really flies. I will take her to the track this weekend for the maiden voyage. Zero coggging with the my 3s lipo hooked up thus far. Hopefully, I won't have any heat issues with the Quark, it seems to work ok thus far.