Yes, no, yes, no, yes, yes....LOL
Yes you should break in a stock motor for racing.
No you don't need a special charger with motor run, just use a 2-4 cell pack for 30 seconds, or hook it up in your car without the pinion on and hold it 1/4 throttle for 30 seconds.
No, you don't need a dyscharger/cycler built into your charger, a discharging unit can be bought seperately, however it is usually a little cheaper and less bulky to buy one that has it built in already.
No, you don't have to tear your packs apart to use a discharge tray, just make sure the pack can fit in the tray.
From your sig I figure you already run/race nitro, so buying a good charger will can also be used for those purposes.... making it a better deal for you.....
G's RC Raceway- Best off-road track on the east coast...period!!!
Pitman for Team Dallas Austin...