I'll be honest...I own two anet a8's modded with steel frames and bowden extruders with e3dv6.
Beyond the steel frame and e3dv6, everything else is stock. Motherboards, power supplies, motors, heatbed, even the heating element and thermistors on the e3dv6 are the stock items.
I don't have mosfets installed and both my printers have been able to complete multiple 10+ hour print jobs.
I'm not saying you don't need it...just hold off until you get the kit.
If you still want the mosfet items I am sure thingiverse has free files you can have.