Yeah - it's TX holey rock, probably better suited to an African Cichlid tank, which I may do eventually... I also have jungle vals, tall Crypts and other stuff that gets tall to break up the rock.
Viewed from the right (where the couch is), the wood will also obscure the rock a little. From dead on, I think the focal point will be the void in the rock section filled by background wood, about 1/3 from the bottom and 1/3 from the left.
I'm thinking a few plants of assorted heights on the left, back right to be packed w/ tall plants, then I'll add some HC or HM or dwarf sag or whatever I can get my hands on locally. I've also got another sack of sand coming, so I can do a bit more of a slope from back corners to front/center.
The lava pictured on the driveway is actually stacked under the holey rock. It's there to do a little advanced denitrification (anaerobic nitrate->N2, O2) as well as to prop up the other rocks.