My son and have been doing surf fishing in Florida for about 25 years. The time of year may? cut down on some opportunities but you'll have a good time. IMO 7'medium weight is ideal, 20# line is ok, drop the swivel and weight, The hardhead catfish are not very good as they are generally small. Use a 12" stainless leader with a snap swivel on it to attach to the bait/lure. I suggest frozen shrimp, you can even put it on a large rouge or similar. Just don't put a Ziploc of shrimp in your swimsuit while you fish. Use a yellow and white floating bait bucket on 20' of para cord leash. Fish and small blacktip sharks may bump it but they won't bother you. Gold or bronze spoons about 2" long are also killer for specks, ladyfish and jacks. If using spoons or tipped lure drop the sinker and stay off of the bottom. Keep your reel dry. Saltwater kills the type of reels we use here. Take at last two. If it gets wet it will tighten up and it's downhill from there. High or medium surf can really be an issue but get out early and fish the evening. Fish the channels between the sandbars parallel to the beach because that's where they roam. Get out waist deep to at least the second channel and hold on.. You'll be sunburned, have sea legs and a ton of fun.
Fish on my friend and don't break off the bigboy!