Yes I would go down early and bring the boat. Martin is a nice clear/light stained water lake with alot of nice fish in it. Another thing to consider is that is the same week that the elites will be fishing lake Jordan and alabama river for the angler of the year chase, so you could possibly go and check that out as well. your options of where to fish that week would be endless, with lakes jordan, mitchell, martin, Lay, the alabama river, and yates lake all being within about 20-40 minutes of where you would want to stay.
They all have spotted bass and LM in them, the coosa river spots are FUN to catch and man they pull like a freight train. If you go to Lake martin i would focus on the main lake points and creek mouths/secondary points in 8-16 feet for schooling bass that time of year, especially if we get an early cold front which I doubt but it is possible.