New tank questions

[Kellyscoral]

Hello - my current tank is a 20 gallon tall tank. We happen to have a 54 gallon tank here that I am pondering taking over. My question is this - my current tank has a radion XR15pro. The 54 gallon is set up with room for 2 high output T5 lights (with room to add in another 2). If I combine the radion XR15pro with the T5s do you think that's enough lighting or would I need to add a second radion XR15pro? I have an MP10 plus a couple of korila 425s - what would I need to add to that for flow ? I currently use an aquaclear 110 but I likely would get a skimmer. I'm thinking no sand and new live rock. I'm just trying to sort out in my head whether I can use most of my current stuff or whether I need to buy a lot of new stuff. Thanks for any thoughts!