nice scaping with lots of rocks in there!
personally i would prefer bigger rocks, something i learnt while trying to scape my previous tanks..
of cos whichever suits u best, most importantly you like it yourself...
just my 2cents, i would try not to stack too much rock at the side of the glass,
when algae starts to grow at the sides, it'll be quite difficult to clean..
but then again yours is a FOWLR, so shouldnt be a problem with shifting ur rocks if u need to..