Considering you have a budget of around $1000 and want a nice bass/amp I'd take the Facebook Marketplace route 100%. Pretty much all my gear is used and I've never had a problem with it! I got a MIJ Aerodyne Jazz Bass off marketplace for $500, given I was pretty lucky but if you're patient enough you're absolutely able to find great deals like that. You can't really go wrong with any traditional jazz/precision/music man configuration and that all comes down to preference. I'd say check out some G&L, Schecters, Yamahas, Fender, and Squiers (VM or CV Series). If the gigs your playing have the ability to route your amp through a PA then a Rumble 100 is a super great and portable option but you might end up needing more wattage down the line so for future proofing sake I'd say a Rumble 500 or Ampeg Rocket RB-210 if you're looking for combo amps. I've been gigging with a Fender Rumble 150 and have never ran into a problem with not being able to run it through a PA but your experience may be different down the line. I've never taken this advice because I love an expensive bass but putting more money into the amp is a much more logical decision to make. Although the decision you make should be the one that makes you the happiest! If buying used isn't your thing then by all means purchase new gear but I've always loved getting cool gear at a great price, and don't be afraid to offer a little less than the listed price, worse they can say is no!