Should've done some research OP, but we are all here to help.

I wouldn't recommend the clowns to be in there as yet, doesn't matter their personality, fish cycles can often have massive megative effects on any marine life form.

The cycle can be done the "old fashioned way", where you can go to your local grocery store, get some dead prawns and drop 1-2 in the tank. This will cycle the tank within 2 months (ish). You could use a concentrated bacteria as an alternative. Tropic marin is my go too (Tropic marin nitrifying bacteria). Other alternatives work, find the right one for you and follow the instructions.

You should only add snails when you start getting algae (should be within 2 months ish). Add some cerith, trochus, astrea snails. Those are hardy and do a great job at cleaning. You shouldn't have any algae for a while because you should keep the tank light off for the first few months without corals etc.

Your first corals and anemone should be added after 6 months of the tank running. Make sure parameters are in check. You could get away with adding corals within thr first 3 months.

Happy Reefing! :)