I know you asked Golden Gunman but I figured I’d give my 2 cents.
If you’re opp. throws a fireball, juice kick over it (use RH juice kick), connect with c.Strong xx Shoryu-Reppa. This is pretty easy to connect; even if they block the juice kick you can push them back with c.strong, c.foward, c.RH, hadouken. Of course you wouldn’t want to use this on characters with a fast recovery. I really like to use this against Sagat (O.Sagat has fast recovery so I don’t use it against him).
Remember to only use the juice kick sparingly, unless you’re certain you have near perfect execution (comes out 19/20 times).
I’ve changed up my overall game plan once again in order to master Ken in a different way. Instead of basing my game around mix-ups, knee bash, and rush down tactics. I’m learning how to play defensively with Ken (in casual matches, not strictly playing to win); this has actually helped my offense because it allows me to see opportunities for attack that I had not previously seen i.e. I was too busy contemplating what the other player’s options were before; and now I wait and see. Thought that might broaden some horizons.