E-Revo 95% finished. Current pics and controller mounting questions!

[R00ST]

I wasnt actually planning on running an rx batt, just using the on board bec (is it 4.8v or 6.0 volts?) But, after doing some reading on here I was reading its better to run either a ubec or rx pack than run the bec from the controller? UBEC isnt an option for this trip (plan to get one when I return home, but will be doing quite a few runs with this on our trip).

If I can get away with just using the built in bec I will definitely do that (less weight on the truck, one less thing to charge!)

Thanks for the comments, you were my inspiration!