what would be the best neu for me

[neweuser]

You could most likely run the 18T. You could push it to the 2200 kv Neu, with 18/51 on 5s Lipo...that would get you there.
But remember dependability. And at those speeds, it's hard to bash like you may want to, especially without wrecking things. You have a basher chassis too, so your center of gravity is not the lowest. you could gear the 2.d to 18/51 and see what speeds you get....play with it....but remember the goal should be around 35,000 RPM for your motor, you want your batts to stay somewhat cool as well as your esc...