While I am aware I didn't win, at least the jackpot, from last night. I'll play anyway...
Were I to win a large jackpot allowing me to have the funds to retire my day job, and aside from the obvious of paying off debt, helping others etc... and pursue music, and gear the way I would really want to I would...
#1. Find a boutique builder that makes one like this, or commission a custom job for a 5 string PJ bass, with a 24 fret neck with Fender Jazz type spacing, and the lower body horn area clear to allow for full fret access. Blocked and bound dark Rosewood fingerboard on a maple / bubinga neck (I actually LIKE rosewood thank you very much), and a Dark Rosewood / Alder / Dark Rosewood body. Passive electronics because, well that is the sound I am really liking...
#2. Keep my current basses, strip the SR480 and refinish it with plenty of Watco Danish Oil and call it good. Get a proper custom pickguard for the Ursa 1 and do the Dixie cup mod. Okay I will probably end up doing both of these sooner or later lotto or not. I love these instruments. Oh and Paint the headstock on my Affinity Jazz.
#3. Probably donate off my TS115A mains, and V2112 monitors, and all my mics. Upgrade to unknown powered mains and monitors. Not a big fan of QSC, not dissing those that like them, but I'd rather keep my current rig... They don't sound right to my ear is all. Several of the Yamaha models sound really nice.... Just need to audition them... Pick up a stack of SM57 / SM58s.
#4. Upgrade my mixer (again) to a Behringer X32 Compact. Maybe... Pretty happy with what I have now...
#5. Fix my truck (Rebuild engine, and 4x4 system), Purchase and PTM (Paint to match) a high roof fiberglass locking cap.
#6. Add one of those big wheeled versions of the Rock N Roller.
#7. Buy land, with no neighbors, build a house, and a large "man cave". Large woodworking / automotive shop on bottom, home studio / entertainment room / bar on top. At least 32' x 64'.
Fill studio / entertainment room with proper studio gear, full drum kit, 2 good guitar amps, my Rumble stack, digital piano etc...
And while all that is going on, remember I have retired on the funds... Dive full time into perfecting performance with bass and guitar, improve my vocals... Spend time developing the band. Probably just pay my band mates to be full time band guys because, well 1.5 billion dollars, why not?