Radio DX7 vs DX8 or suggestions

[Hotwheels]

Can you give me a list of what is needed from Servanaut if I go that route? With Servanaut would I still be able to use the Novak Rooster esc that came with this King Hauler or do I need to purchase esc from Servanaut? I know with the newer Tamiya MFCU it has it's own esc if I read correct. I got what I feel was a good deal on what I have so far.
King Hauler with box trailer all together no missing parts, Tamiya 1st gen lighting kit Novak Rooster Reversible esc., electric landing gear on trailer came installed, plus an old Futaba Magnum JR 75mhz. and Futaba 4 channel receiver, can use those in one of my other 10th scale cars. I have removed the old Futaba 4 channel receiver, I purchased all the above off Craigslist for $500.00. I have charged my DX8 for 12 hrs per manual, I have been able to bind my Tx & Rx So with the purchase of the DX8 for $429.00 I have less than $1000.00 in this project so far. Time to decide on direction for the MFCU and spend more money. Looking forward to finishing radio and electronics setup then move on to the fun stuff "Customizing".
Thanks
Lou