Some Akuma CC guidlines/summary:
With Akuma’s CCs, it’s best to keep the pre-activation as short as possible (for damage scaling), for example, activate after only 1 LK Hurricane.
The best way to juggle them to the corner is with SJ.HKxxAir Hurricane. You will land a little further away from your opponent after each rep, so you should include a Close S.HPxxHK Demon FlipxxAir Hurricane when necessary.
Almost always, the Demon Flip piece should be the first thing after the activation. If the opponent is very close at activation, you may want to start with HPxxC.LK (whiff) instead since the Demon Flip might not connect if you are too close. If you are too far from your opponent to do the Close S.HP, you can substitute it with C.HP. You shouldn’t need to use more than 1 set of this to juggle from any point to the corner (even fullscreen).
Of course, when you get to the corner, finish with HP Red Fireballs (use the punch cancel technique to squeeze in a few more hits if you can) and the Super Fireball.
If you are already in the corner at activation, just do 2 reps of Straight-Up SJ.HKs to preceed the hit-count fireballs.
The good CC set-ups are Hurricane Kicks and the Demon Flip Grabs. You can also use DPs to set up the CC. For example, do an early LP DP on a jump-in. Only the last hit will connect, then do HK Hurricane (leaves you at point blank) and activate.