Can I get some feedback on this aquascaping idea please?

[spencerC]

(3 general "towers" of live rock with a long pile of LR behind them/in the middle creating 2 caves in between)

This is an idea i have for aquascaping in my standard rectangle-size aquarium that i'll be getting within the week, hopefully.
Hopefully it makes a bit of sense!
I wanted to do something a bit creative and i thought this up.

The picture on top is pvc pipe, if i need it...?
I'm thinking cause it's not that big of a tank i can just get away with aqua-safe-gluing the pieces together to create this?

Are there any sites specifically about LR aquascaping?
Or a site with lots of good aquascaping-inspiring pictures?