DJI_

I just went to my local best buy and this guy working there said you cannot upgrade the ram on the 27 inch anymore, I don't know if the in-store display/sample iMac was a 2019 or 2020, Im thinking it was the 2019. I do not believe him though, I am thinking he has to say that being that he works there lol. But just to make sure, you can still upgrade the ram on the 2019 27-inch iMac right?!? I am going to anyways. I have a couple of questions in regard to the $1799 2019 27-inch 5k iMac for 4k video editing. Apologies in advance for not really knowing too much but I am learning lol.

Question #1: Would the base model 2019 27-inch 5k iMac (6-core 10th gen. i5 processor, 8gb ram, 256gb SSD) be good enough for 4k video editing? Good enough as in a smooth editing process: timeline scrubbing, playback with no dropped frames? Im not really worried about the export rendering times, being as im not really on any time schedule or anything. I will be upgrading from the included 8gb ram to 64gb ram (owc 4x16gb). Will that upgrade help quite a bit being that it is only the base model (6-core i5)? Or will it still just be "ok" and "managable" rather than "fast" and "a smooth process"?

Question #2: Would it be better and "safer" to just get the $2299 version (8-core 10th gen. i7 processor, 8gb ram, 512gb SSD)? And still upgrade the ram from 8gb to maybe like 40gb (owc 2x16gb + 8gb)? The type of work I will be doing are like shortfilms with grading, music, and about 30-45 minutes long.

Thanks.