You only really need 2 pieces of gear to achieve that kind of setup, plus several Midi patch leads.
This is a suggestion:
-Behnringer FCB1010…for contolling everything via Midi in banks of presets, including all Eventide stompboxes, analogue stomp boxes, and amp channel switching (even for amps without Midi control)
-WOBO Midi Looper 4…up to 4 true bypass loops all controllable via the Behringer.
The Behringer is an affordable Midi foot controller and lets you get the most out of the outstanding Midi capabilitties of the Eventide Factor pedals