That's a good list to start from.
I admit I haven't gone through all of your threads, but here are a few more items, some of which you may have addressed already.
If you're going to run a sump, you will want to vacuum out the detritus as it collects, probably once a week or so, you can do it as your weekly water change, just vacuum out the sump and/or the sand in your display as you drain the water.
+1 to George. Top-off with RO, water changes with Saltwater.
Once you get full up with corals, you may have to consider some dosing, but it depends on how many, size, and species that you put in there. With the exception of SPS and plating/encrusting corals, most things will be fine with a good salt mix and weekly water changes as the salt mix should contain sufficient amounts of the items being used up.
You'll want a good test kit, and want to keep an eye on your water parameters. More so at the beginning, but still on a regular basis. You'll learn as you go the things you have to test for and how often.
If you haven't purchased an RO unit...I highly recommend it. There are a few hobbyists out there that don't use RO, but most are experienced marine keepers and compensate for the potential issues you can have with tap water by other means. Some of them just have exceptional tap water. I'm not saying it can't be done, just saying you can avoid potential issues down the road if you know your water. Regardless water testing is a necessity. I can't stress this enough because I got burned. If you purchase RO or Salt water TEST ITS PARAMETERS BEFORE YOU ADD IT TO YOUR TANK. I got burned by a LFS that didn't change it's filters and it took me much longer than it should have to figure out that was the source of my nitRATe problem.
If you have a good source for RO water and salt water, such as a respected LFS locally, that's good too and you can go that route, although in the long run you probably save money by buying an RO/DI unit. Personally, I would recommend just buying RO and mix your own saltwater. I would also add on the mixed saltwater......It's not entirely NECESSARY, but highly recommended to mix in advance as George says and mix well to stabilize O2, PH and temp.
Hope that helps.