I cant comment on your choice of esc and motor there although I can tell you that to use the HPI Mod'd motor with the XPS micro esc you'll need to change the standard plug that comes pre attached to the HPI RS4 Micro motors.
Other mods or hopups I'd recommend are:
- Lock the rear diff (The drift micro RS4 comes with a little spool diff that you can install in the rear)
- Consider converting the chasis to a Penguine RC Carbon Fibre chasis. (serious improves handling and also increases your electronics mounting options.)
- Get yourself a set of the Micro RS4 drift tires which HPI have released. They are basically the same as the Drift-T's for 1/10 cars and have a perfect grip/slide balance.
Glad to see another mini drifter
Mini's can be great for indoor and winter time use because you can rig up a little track almost anywhere in your house. I have a little track marked out in the Kitchen/Dining area of my house and its great being able to get some drift time in any time of day (with airconditioning hehe).