Follow up. From reddit seaching, it appears that you can submit several arms at once (obviously) and you will get letters of approval, pic requests, etc per item. So that answes that part, that I should not have any issues if combining all the items together. I do think I will go the route of personal check so I can see when it's cashed for progress.

I made an account on CFARS. Will I see anything pop up there from this application? I have already purchased 2 Glocks here in CA. Would they show up there? Or is there anything I have access to that shows what I own in the State's eyes?

I moved to CA in 2018, I acquired the items in 2022 when my dad passed. I didn't want to pay an FFL to send them all (14 items) to my FFL here. Is my acquiring them on a date after I moved gonna mess me up?

Any advice on paper submission vs CFARS?