I'm looking to get into mono imaging and using a slightly larger and longer scope (something like a C6 or even a C8).  I know that with a longer scope I can't do tracking the same way as I do with my 72mm refractor. Which would would be better?
1) Get a camera with a guide scope built in - like ZWO ASI585MM-Air or ASI2600MM-duo (or air)

2) Get an off axis guider and use my current ASI290MM guide camera

3) Getan OAG and a new guide camera

4) Something else

let me know your thoughts - I plan on starting to make this just towards the end of July 2026.

My current setup is:

Scope: AT72ED-II w/ .8 FR/FF with EAF; SV165 30mm guide scope f/4.0

Camera: ASI533MC-Pro; ASI290MM guide

Mount: AM3 with ASIAir Plus

Filters: ZWO 5 position filter wheel; ZWo UV/IR-cut, Optolong L-Extreme, Optolong L-Synergy