As a mate, Ill give you my 2 cents. This should be mostly for Flounder, but Ill give you some insights on bass from what I know.
1. Your setups are more than adequate. IMHO, the most important part and often overlooked is the test of the line on the reels. The lighter, the better. Lower test line (15-20lb test) = less weight needed for the jigs. Paried with 20-30 flouro leader, using a alberto knot instead of terminal tackle, is best. You might lose a fish, but I've never seen a flounder break 20lb running line.
2. Rig wise, I would say keep it simple. The most common is a bucktail (spro) with a teaser. Teasers can be all different kinds: small bucktails, naked baitholder hooks, skirts, etc. My go to is a single weight loop on the bottom (no bucktail) with whatever size lead is needed, and a glass minnow teaser about 18" above the weight. Tip the teaser with a gulp 5"-6" grub with a strip of squid/fresh meat strip if possible. This setup is beneficial because the glass minnows have a long shank hook, and if the weight snags, it breaks and you didn't lose 9 bucks on a bucktail.
3. Seabass- Seabass can be caught on pretty much any bait/rig/tackle set up. Simple chicken rigs, top and bottom, with meat will catch. A jig will work, but usually if the bass are thick (it usually will produce larger ones if they are balled up).
4. Tips- Bring 5-6" gulp grubs. Classic colors include white, chartreuse, pink shine, etc. If someone around you catches on a different color, dont be afraid to switch if you can match it. Don't jam too much bait on the hook- you want the presentation to be natural, not a spinning propeller of meat.
Lastly, and more importantly- be flexible. Conditions can change fast, and you should adapt as well.
Oh yeah- tip your mates. Most of the work they do happens before and after you even get to the boat...