I tend to target gigs that are established, in that they have their own audience because music is known to work there, plus a FB event is about enough we'd do.
Everyone has a profile so there is often interest there and then you need to deliver to build for next time.
I recall, before SM, the circuit used to take 18months to buid a good draw reputation.
But that was at a time when there were so many venues doing gigs almost every night of the week.
The market is nowhere near that level now but some towns can have 5 plus gigs on friday, sats and sundays with many places doing all 3 sessions.
Those are the places that have music working.
So, a combination of known music venue and decent known band should do it.
The music venue MO has changed a lot these last 2 years.