Damn, finally gotten around to beating most of the difficult jumps on the main course, only have 3-7 and 4-1 left. Though I have been able to do both crossovers on 4-1, just need to do them in a single jump. That being said, I think the order of jumps that makes the most sense to me is as follows:
c3: 3-1, 3-3, 3-5, 3-8, 3-2, 4-3, 3-4 and 3-6?. Not entirely sure about alt-walls, I am more or less used to them by this point but for the people seeing them for the first time they might be tricky and I personally find 4-3 to be too easy to be considered c4 so I think it should be moved to c3, though it might be just me
c4: 3-7, 4-2, 4-1, 4-4, 4-6, 4-5, 4-7 and 4-8. 3-7 is here because of the 4-3 move, might not be c4 but if it is then it's definitely easier than everything else on c4, well, maybe not 4-2
On another note, could you mirror 4-1 so that player gets the choice which crossover they want to do first? Like what you have on 4-8.
Oh, and OP still has a link to rc4.