Welcome to AA!
If your tank was salt. I wouldn't use the gravel. In this case starting new is better. You can get a nice HOB
for a 29g under 50 bucks that will do the job well. Also if you want plants. What plants you go with depends on the lighting. There are a few different types of substrate. Gravel of coarse but there are new planting subs like Eco-complete. Etc.
I think while your building the "will power" to cycle. You should decide what type of tank you want. Research and ask questions so that when the time comes you have everything in place. Makes life a lot easier. Cycling isn't that bad if you do a fish less. In truth once you get the ammonia dosing accurate
Its really rather boring unless you have plants to mess with.
There a couple good links in my sig.