Oh wow, great information guys! Thanks so much and so fast a reply! Good thought on the BEC too.
I have a tiny servo Futaba servo (meant for another project) I thought I'd put to good use but now after that video demo... 15 bucks and what the heck huh? Just change out the rim and cross bar and no limits to adjust.
Speaking of boards. I'm kinda lazy and don't want to download a bunch of sounds for a custom board, do you think a Tamiya semi sound module package would be the best for me? 'Could' it handle the second servo set-up? It has the important sounds, an ESC, speaker, lights and best of all... a fifth wheel. Since I still want that trailer hauler look. Maybe just some wiring work to stretch out but am I right in how they arrive. Plug N play like the tank electronics?
I know many think it's expensive ( but so are tank MFU/DMD's) and they are so simple and reliable and that's what I need AND especially 1 or 2 trucks so I don't need anymore hair loss due to being frustration!