A few things to bear in mind with a new band once you are rehearsed and ready to gig -
Venues are usually reluctant to book you as they have never heard of you and they generally give the bulk of their available gigs to established bands they have had before.
Timing of when the band is ready to gig is very important i.e. if the band was ready now, not a good time, most venues already have their gigs fully booked for the year. The ideal time for booking gigs is October for the following year, most venues are looking to take bookings around this time.
Ideally six months of rehearsing once a week should have a decent cover band ready with 2 x 45 minute sets.
Start rehearsing in July and by October you should be reasonably confident the band is working, now is the time to book your gigs for the following year, this will also give you a timeline to work to your first gig.