Newbie 50G setup Suggestions needed

[Quincy]

Hello everyone!!! i would like to thank everyone for the excellent resource of this forum, i spent last year reading up on switching over to SW setup. I have a 50G tank currently FW setup i plan to convert. 50g tank, 2217 eheim cannister filter, 24" fluorescentlight, aquaclear 802/70 powerhead with attachment filter, and heater. I would like to setup a FOWLR setup, i plan on having a few clownfish and a couple tangs something simple but nice. Unfortunately my tank is not drilled and have no space to put a sump in stand, also concerned about noise. I plan on getting an aqua c pro protein skimmer or a Tunze DOC Protein Skimmer 9005 any suggestion? I also plan on picking up Tunze Turbelle Stream 2 Pump 6065 not sure if i need it cuz i have aquaclear 802/70 powerhead. For light i plan on getting an actinic bulb. I was wondering if i still have a use for the eheim 2217 eheim cannister filter. How much liverock should i pick up? i plan on getting Caribsea Arag-Alive Indo Pacific Black Substrate 20lbs. Anything else i need or suggestions? Any tips help or recomendations would be great. this is a first time setup for FOWLR.
Thanks everyone!