Put the SLX reel on the 703, and one a bit larger if you have one on the SLX rod. Those 2 rods complement well, they are not similar. The 703 is a medium rod, though its labeled MH, and the SLX is a true MH, maybe a tad stiffer, and considerably faster than the 703 to boot. It will frog ok in all but the heaviest cover, and will do alright with lures in the 1/4-3/4 range.