I have a 10gallon and unless you find some where that has 1 to 2lbs rocks, you will not be able to put in 22 or even 20lbs of live rock, IMO. Depending on the amount of sand that is in the tank, that could take up anywhere from 1inch or more. I have 16lbs in my tank and it leaves enough room for any corals or animals that like to live in the sand. Also I have enough room to add small (very small) rocks with corals on it.
About the lighting, it depends on what you want to keep. The MH lights that were talked about earlier would probably be the best bet, but I have the 96w powerquad by coralife and I think it is great. You can find it on most web sites for under $100.
If you are looking to get an anenomie to host the clowns, there are other corals that demand less light that clowns like. I have a toadstool and my clown lives in it, but of course my Green Clown Goby lives in my open brain coral.
Just MOP, but with a 10gallon the hardest thing is to keep your water quality high. If you have the room I would recommend setting up a refug, it will help your water quality stay stable.