You shouldnt jump in on him, not cause of uppercut, but of 5HS (welcome to the combo if its CH).
Not sure how effective 6p is after rocket, though it will stop his pressure, but not Fanfir, and if you FD his Rock it, the host player should know he has to come closer to attack rather then throw out say f.S.
Fafnir beats horsie, so watch out if you going to do it after he Charge cancels. (I wouldnt recommend).
The match is 5.5 in HOS favor IMO (cause of robo's def stat)