You have pretty everything to get you started on your list. Im not sure about the hob
filters I would lose those and do a sump. A sump is going to make you tank look a lot better. The only thi g thst will be in it is a overflow box (skimmer box part) and you power heads as well as a return line.
With the sump you will build a chambe for you refugium. So theres not need to have something else holding your refugium.
Check out ebay if you want an rodi
unti. I bought mine off of bulk reef supply the 5 stage rodi
with drinking kit. My friend got one off of ebay the exact same thing but my canisters are clear his are not. He saved about 100 to 150 bucks compared to mine.
You are missing a return pump if you are doing a sump.
If you are getting a skimmer I tyink it would be a great idea its not needed but it does its job. If your going to wait to buy the skimmer which is fine. Before buying one make sure you have the height under your stand for it. As wrll as a chamber in your sump for its foot size. What I would suggest is find a skimmer you are going to buy get the foot print online and build your sump to those dimensions.