Whoooo nelly. we cannot choose the lighting system for you. The 1st thing you need to do for long term success and to mitigate spending money needlessly, is to understand the principles of lighting and the various options. 1st you need to make a list of the animals you want to keep. Then you need to determine what equipment is needed to provide for their needs which includes lighting. once the system has been selected and the equipment purchased you put it all together. since you have high temperatures where you are, either an air conditioned room or a chiller will most likely be needed. lighting for fish only is for viewing only and any florescent system with the correct bulbs will provide that. now corals are a different matter, softies can survive with with compacts, t-5 or vho flourescents. hard corals i.e. sps, and some lps need mh. so my recommendation is to go to the helpful articles and read all the articles page one for the beginner, or newbie, and then read the lighting on various pages. once done you will have the information available to make a decision. once done reading if you still have questions come back to your thread here and post your questions. the light system you will need with depend on what you will keep, the depth of the water collum, your ability to keep the system at apprx. 78 degrees. good luck keep us posted on your progress. cost will depend on the light system you choose, mh use most energy, vho and ho next, and so on down the line. electronic ballasts use less energy and develope less heat.