Blues is a broad term so it might be worth trying to narrow down the style of your prospective band. Just as a starter, I'd suggest listening to Chicago blues such as Muddy Waters, Howlin Wolf, Sonny Boy Williamson, Buddy Guy & Junior Wells. Then try Jimmie Vaughan (with the Fabulous Thunderbirds and solo), the Hollywood Fats band (Larry Taylor on upright) and Stevie Ray Vaughan (Tommy Shannon on bass). These will stand you in good stead whatever style of blues you end up doing.
My only other comment is that a lot of blues bandleaders want a retro look & sound too. Your rig should be fine but you might find they turn their nose up at a Warwick. Just treat it as a good excuse for another bass!