HH puller 14T questions.

[CREEPINKING]

Just ordered a scx10 earlier and was trying to figure out what motor/esc to run. Im leaning towards a waterproof HH Torquemaster BR-XL with a 14T cobalt puller on 3S. I plan on doing a lot of crawling with this rig but I also want it to churn a lil mud too so my question is what pinion would be good for this setup? I have a stock HPI 27 turn I could run in the mud so I wouldnt ruin the puller so I guess the pinion on the 14T would be just for crawling/everyday use. I have seen some guys on here running the 10T puller but no 14T's. Any input would help.