Ricks, I have never tried to waterproof with the liquid tape but I did build a little waterproof box for the receiver and esc and all connections with a Plano waterproof box. Just a suggestion. I wet my receiver once and that was enough for me. The box was 7 bucks and I never wet either one again. I'm in Louisiana so there is unexpected water everwhere...waterproof is a must have for bashing down south...
thats not a bad setup.
would be harder on a 8e, as there is less spare room....and the ESC is higher amp/volts and needs more air for cooling. That kind of setup on a 8e could only work safetly in the winter time.
But the sc8 should do the trick. Then build a box like john's for the reciever and seal your servo's case with elect tape and add some grease to the output and you are good to go.