Getting everything i need to have a successful running tank

[iconbenz]

I am getting a 300 gal glass tank built for me and i need to know what i need to run it and diagrams or a step by step walk through on the things i need to run it . I know filteration, but what kind . I also was told to get 2 bulkfittings for the tank , and to get two cut outs for the fittings. What are these for and how will that set up work , wont water drain through these fittings. I know i sounds dumb but im just trying to get an understanding of all this. I already have a 90 gal tank with simple operations such as a filter, protein skimmer, heater, but for this 300 gal people are saying i need water pumps, bulkfitting, cuttings in the tank . I guess what im asking is what do i purchase and how do i set it up . If you have the name of the products and diagrams on setups , or a step by step walk through you would be a life saver for me. The price of the products is not that big of an issue i know this stuff isnt cheap thats why im trying to make sure i do it right the fist time. I have a leopard shark , brown banded catshark, sailfin tang right now and i want to put them and live rock in this 300 gal tank , so please help me in any way possible , Thank u so much