what would be the best neu for me

[glassdoctor]

I think three things...

1. it will probably not be 17lbs...
2. even if it is... imo a 1515 would push it fine. I would be more concerned about the batteries and esc at that point.
3. 2700kv is too high, esp on 18/51 center diff setup.. that would be too high even for a buggy. Think 2200kv as a maximum... and probably like 12/51 or so on that motor.

But.. it's doable for sure imo. You just need to not go crazy with kv and gearing....