Looking to convert an MBX5T

[Shimmy]

Hey fellas...

There's a very real chance I might be getting an MBX5T soon (just gotta go check it out/pick it up) and just trying to find a motor I could grab for it.

I am looking to go 6s (closest track is about a couple of hundered k's away, so I'm after a bashing setup), using the turnigy/Zippy 25c 5ah lipos.

I am kinda doing on the cheap side at the moment, kinda planning on upgrading later on but keeping everything as backups.

The motor I am looking at is the Leopard 4074 1400kv.
http://www.rc-fans88.com/details.asp?prodid=2214

Found a few cheaper ones but not enough info or were 2 poles.
I don't really want to go much higher than 1500kv, 1600kv at the most.

I would like to gear it for low 40mph/mid-high 60kph, I figure this would need about a 17t or 18t pinion?

As for the ESC, I am looking at the Turnigy Trackstar or Hobbyking 150A.
I am hoping I will be able to run mechanical brakes.

Is it possible to be able to turn a servo off but still have control over the travel?
As mentioned I would like mechanical brakes but reverse would be nice also.
Could a switch be made to close or break a power or signal wire to the servo?
I assume this would need a 4ch radio though (I only have a 3).

As for tyres would it be possible to run the Proline Moabs?
I would like a general bashing set of tyres and these fit the bill for the most part I think.

Any help would be much appreciated.