Heh Stunt11, Welcome to SF, apologies for the dealy in replying!
Sounds good – 5 gallon is a good size because you can still have some decent sized plants in there.
Carpet plants – I would go for glossostigma with that light level and excel or hemianthus.
For the wood I would go for some moss and maybe a single anubias nana.
Background – some sagitaria subulata on one side and some limnophilia or similar on the other side.
Maybe put a single small crypt species in the mid ground as a feature?
That should give you some idead anyway mate.