mixing those 2 clown fish won't work. the tomato get large rather quickly and are sometimes aggressive. I would also stay away from the dwarf lions unless the one you pick up is really small. lion fish have huge mouths and although they aren't aggressive in the terms of bullying, they can and will eat anything that fits in their mouths. The rest of your stock list looks fine.
I recommended:
- A pair of your favorite clown
- a dwarf angel
- small school of chromis
- a sand sifting goby paired with a pistol shrimp
- cleaner shrimp
- and a clean up crew
-15 mixed snails
- 15 hermit crabs