you could invest in a quality footcontroller. I have a GigRig G2 kinda pricey but well worth it imo. I use 2 amps stereo and use both fx loops at the same time for 1 h9 the other goes pre/post in front of amp..loop 3 and loop 8 on controller. You can check out my post if interested its kinda detailed but shows what you can do with 2 amps, G2 (or other controllers), and 2 h9’s.
posted under.. G2-stereo-dual amps -dual h9’s-dual fx loops