Rajul, Im using the MG's in mine. Im in the process of building a TC ARF right too. I threw everything that I have....and I mean everything, on the scale and it came out at 4lbs 6.6oz's. And this is without a few changes that I'll make to the setup to save a few more oz's like smaller throttle servo and lighter hardware and LG.

Look close and you can see the 4lbs 6.6ozs

EDIT.....actually in the pic the scale shows 4lbs 6.0ozs