You'll be the 1st person to keep only damsels in a 4FT! Haha, anyway, i think a tank with LRs will look much nicer....im sure you don't want your 4FT tank to look like those in the LFS. It wouldnt do justice to the 4FT, well, to each his own. Oh, if you ever decide to get LRs, try do it before you add any fishes, the cycle will restart again. And 1 word of advice, it'll be nearly impossible to catch the damsels if you have LRs, add them with caution. They are agressive fishes. Have fun, post up some pictures soon yeah?