What SSD disk speed is enough for FCP and migrating to my new iMac
I finally got my new 24" iMac! OK, now I have questions (albeit a little late) about SSDs and account transfer.
I presently have a 1000 MB/s SSD. I see that I can get a 2800 MB/s SSD. Would that gain me any speed with Final Cut? And assuming I use NeatVideo noise reduction and their dust and scratch filter. I know that NV really gets your GPU going. (Well, my optimization tests with v5 came up with GPU only for the best speed.)
With Migration, as has often been recommended here, I am doing a "clean install." I assume that means copy over everything but the Apps. Migration assistant gives the following choices (from Move your content to a new Mac - Apple Support):
Applications
User account
Other Files & folders
System & Network
Which of these should I check when doing a "clean install"?
Will my iTunes media be migrated properly to the new separate Music/TV/Podcasts/Books apps? Or should I upgrade on my old Mac to Big Sur first? From what I gather on the web, I can migrate my Mojave system directly to the new Monterey system without any problems. Is that right? I'd really like to be sure first.
And what is Quicksilver? I sometimes hit Cmd-Esc by accident, and it comes up. Did it come preloaded? I don't recall ever downloading it. And I can't find where to disable this shortcut. Where is it hidden? Yes, I checked Keyboard in Sys. Prefs. Not there.
TIA!