Okay a couple of comments.....
1. Not sure what you are needing the air pump for as you won't be needing it in a saltwater set up. Bubbles create salt creep and the actual oxygen exchange happens at the surface with your powerheads creating some agitation of the surface.
2. To repeat Camaro you don't need an acclimator. Just use a length of airhose with a knot tied in it to create a drip via siphon into a bucket. Cheap acclimator....
3. If your intent is to run with a deep sand bed you will need much more sand. You will need to create approx 5-6 inchs deep using the Caribsea reef sand. Here is a good reference on dsbs
DeepSandBeds
4. What are you using the hob filter for? if for quarantine you are defeating the purpose by running it through the main tank....for a quarantine pick up a cheap 10g......
5. You will need more salt as you will be doing a pile of water changes in the beginning. You will also need dedicated stuff such as buckets, measuring cups, turkey basters, tubing etc..... You will also need something to mix saltwater in as after the inital mix you will need something that will hold about 25g to mix it in. Water should be made up about 24hours ahead of time and be areated with a powerhead to fully oxygenate it.