Hey and welcome.
First off how come you feel that your Black Max and Vengence are not the best for that technique?
A 6'6" - 7'0" M / MH rod and a 6.3:1 reel are pretty standard for worms and jigs. The vengence and max are not the best quality rod/reel on the market but if its what you can afford then it can certainly fit the bill. Alot of guys on this site use the Black Max and the Vengence an$ Vendetta rods.
IMO, a 6'6-7'0 M rod is great for worms and jigs as long as you dont plan on anything heavier than 3/8 or so. I have a 6'6M rod that use for skipping docks withs worms, light jigs, senkos ect... i like a M action worm rod, i can really skip alot better with a lighter action.
If you plan on being able to use heavier stuff then a MH might be good too.
8-14 line is pretty standard. My line is choosen based on the cover and water clarity in my lakes. Thats something your going to have to figure out. As a rule of thumb, i always use as light of line as i can get away with.
I use 30lb braid on most of my. Worm/jig/spinner bait rods...with leaders from 8-14 lbs.
On my dock skippin rod i mentioned above, it is lined with straight fluoro, 12lb test
I use braid because my three local lakes are Full of vegetation, rocks, and boat docks..
I could get away with 20lb braid, but again its a personal choice...20lb braid tends to dig into my casting reels...
If you starting using flouro or a braid/fluoro combo along with tungsten weights, it will great improve the sensitivity that you have. Braid/fluoro/tungsten is a game changer.