Hotshot 2 Help

[Tobamory]

Guys im about to embark on adding the following to a new acquired Hotshot 2

Radio gear
Steering servo
Motor
ESC
Battery

Ive been asking a few model shops about what I should get and im hearing differing views on motors batteries etc. so some questions I have

1. Is it a fact I need to stick with a brushed motor 17T 19T around that so it wont destroy the gearbox ? If I can use a brushless which model would you get ?
2. I presume I need to use NMIH battery but ive also been told if I use a LIPO 7.4 4000mah I will be ok, anybody any views ?.
3. Im old school and want sticks what should I get Spectrum d6 or Etronix ?
4. Any advice on a servo for steering or will any be ok, was thinkin steel gears and bearings.

I did race the Hotshot in the 80s so have a view on what you used then, but id like a longer runtime so how would I get that I presume Lipo is the only way ?

bare in Mind I will be buying a K1 or Xray later so anything above I can re-use then cool

thanks guys

Rob