Difficult one trying to recommend a rig for some else .. I tried loads of setups but find it hard to justify having expensive gear when only playing in small venues / pubs etc.
Part of my issue is worrying about it getting stolen or trashed so I've gone back to a simple setup :
GK 400RB
Bagend D12-D
J&D jazz bass (modded)
Warmoth jazz bass
No pedals anymore so 'grit' comes from cranking the amp & 'riding the GK rails' one of the best grind sounds I've heard (my alternative would be using Darkglass B7K or similar), Bagend cab is heavy so no one is going to run away with it lol but I may go lighter (Barefaced) if we gig more, jazz basses just work for me so a cheap modded one is ideal plus a nicer one for home / recording & certain gigs.
I was saving for an expensive amp but just couldn't justify it .. In your case 'Stealth' I'd consider either the new Darkglass 500 with a good 4 ohm cab if that's the kind if grit you like or get the quietest (hiss free) amp (I'd go Glockenklang) & find a dirt pedal you like ... hope some of this helps