How's it going JJJ?
Sounds like you've set yourself up to climb a pretty steep hill tonight.
Figuring out EQMOD and using it to drive the scope is quite a handful in itself, but you probably need it to drive the scope (pulse guiding) if no ST4 interface. Getting just the guiding going can be quite a bit of work on its own. If does become too much, I've got a GPUSB you could use for a while so that you only have to worry about Phd, cameras and guidescope set up for a while.
Where are you up to?
(and have you got plenty of booze and chocolate nearby
)