Hey Simfish, yes if you have any 1 or 2c coins.
Discus are fine in 26-27 degree celsious temps only in some areas is it 28+ and only over summer so I have heard. I keep discus at 26/27 and have for months and they are fine.
The aquascape is easy on the eye, nice blending of the colour variations. The driftwood is a bit heavy on the left however and makes you lose depth. The eye judds to where it is raised in the middle so you might want to cut it off or adjust it, or wrap some java moss or similar around it to help it blend in. Get some more stem plants for the back area so it fills the dead area back left, and once they grow thick and bushy around the driftwood coupled with the foreground covering all the stones it will be looking really good. A lot of people think a flat substrate is better than a rolling one, but this is of course your preference, just something to keep in mind.
HTH