Alex has said the 30-28 will not get to the next node so no reason to run it. If you are hell bent on running Nosler brass then the 30-28 will be easier on brass no doubt. The ADG brass for the 30 nosler has slightly more capacity than Nosler 28 necked up so physics is going to do what it does here and the 30 nosler with ADG brass will be lower pressure than 30-28 nosler with nosler brass. Properly throated a 30 Nosler will run comfortably at 3100 with 215s in Nosler brass and even more so with ADG. Both are great cartridges but the fact is the ADG brass for the 30 Nosler made the 30-28 in Nosler brass a moot point. I have all the brass on hand. I have necked up 28 brass. I have owned 4 30 Noslers. These are the facts. The one wildcard to me is the case capacity of 28 nosler adg brass necked up. I am strictly speaking to H1000. N570 is a completely different animal.
Like Dan said he already has the components to it is a no brainer. I would pick your preferred bullet and do a ladder starting at 80 grains for the 230 and 82 for the 215 and work up in .5 increments. H1000 has huge lot to lot swings so your node could be 83 it could be 86(215).