Having trouble with characters with a wall bounce move. Like Ryu’s step kick, or Wesker’s double palm smash. I can’t see to get the right timing to start dashing forward to follow up with the combo. Any advice?
It differs for every character.
What is your problem? Like, you can’t reach the character after hitting them with a wallbounce for midscreen?
Are you fine with wallbounces in thre corner?
For example,
From Midscreen, Wesker would need 2 wavedashes to catch a wallbounced character. After 2 wavedashes,
c.M, s.H and s.S can be could followups to continue the combo.
From Midscreen, Ryu would need 2-3 wavedashes, depending on how you wavedash.
Note: Wavedashing with Ryu can cause accidental inputs into his Denjin Mode. So I reccomend going into Denjin mode first before wavedashing.
After reaching the enemy with a wavedash, you can continue practically with a s.M or a s.S.
Hope that helps.
If you have anymore questions, hit me. 
Thanks for the help!