120-150 gallon?

[Trigs]

well im looking at building a bigger reef tank but have no idea what to get. I want to keep the price down as much as possible but still have a good outcome. I was leaning towards a 5' 150 gallon tank with T5 or a 120 with T5 but then started to think that may be to much money so then i was thinking a 60 gallon but i figured im going to be upgrading to a 150 or so eventually in the future so why not now? i just wanted to see what you guys suggested on next size tanks for me, and prices i would be looking at for them thanks.