Since you’re bringing your truck, bring all 3 rods. Ideally, a 12’ or 13’ 3-6oz rod is the perfect Pompano rod. You can get by with a 3oz weight but will normally need to be a Sputnik.
My go to setup is a 13' 3 - 6 CCP Gen 2 with any good revolver reel. Most of the time a plain old 4oz pyramid sinker works fine. I use a couple spinning reels in the close in area especially if there’s a trough. Some days though around here only the long distance casters are catching pomps so you need to be able to get your bait out past the second bar and that’s why I also take a couple 3-6 oz rods out.
You don’t really need a heaver here except in your case if that’s all you have to get 4-5oz weights out if the wind is blowing hard. If you need anything bigger than 6oz or really even 5oz, you won’t be catching anything but catfish, sharks and rays as the water will be too dirty.
Just as important as water temperature is for pompano so is water clarity. The cleaner, the better. 68 degrees is the magic temperature here and water temps here in St Augustine today were 65 degrees. It’s been a stupid hot February here and shaping up to be an earlier than usual pompano run. They’re already catching good sizes in Melbourne beach about 150 miles south.
Sand fleas are still hard to come by but crab knuckles work just as good or better.
For the jetties your 7’ will be fine if it’s a good jigging rod. I actually use an old 9’ st Croix mojo surf. The extra length helps keep your line vertical to avoid the dreaded snags. Use small weights also to avoid snags, like 1/4 or less.