A lot of your bass tackle will be just fine.
Any Bass Assasin in olive, pumpkin seed, water mellon, black or some pearl, or in clear water something like opening night.
Small walk the dog tops like spook jrs. or anything similar will also work.
Spinner baits are great for redfish shallow around Oyster reefs or just over the sea grass. Take the skirt off and replace it with either a mullet imitation or a curl tail gulp
Poppers are less effective in the salt compared to the walkers unless there is a good bit of wave action. They'll still work but I prefer the walkers.
You will find, as Grinder alluded to, that the saltwater lures are built a little or lot tougher. The SW versions will have a stronger split ring and a tinned zinc coated hook in most cases. The black nickel coating isn't bad and it'll work for a weekend but they'll rust faster than the sink.. they all get rusty... its just a matter of how fast.
Have fun, ya'll catch some fish. He'll probably tell you what to throw.
Me... if you have any zara spook or spook juniors, I'd throw that in any color and clear-ish. Add the above plastics or zoom flukes on the jigheads he mentions. and grab a spinner bait and you'll be good to go.