Tubevideditor

Bit of a tech question here for those in the know..

For video editing in Davinci Resolve, I'm using a PC (i9-9900K / GeForce 3090 / 64GB RAM / SSD drive for program installs / big SATA drive for saving encodes).
Connected to this I have a couple of 20TB NAS drives (WD 20TB My Cloud Pro Series PR2100) and x2 WD 24 TB My Book Duo external drives connected by USB 3.1.

Things are running good but I keep getting tempted with the newest Imac 2020 5k as i hear they actually perform better than the Imac Pro's right now plus it has the 5k monitor.
I run a 34" widescreen curved now but its not 4k.

If I went down the Mac route (and maybe switched to Final Cut as its more geared for OSX), would the MAC be able to read and write to all my drives in which are in NTFS format?

Would using the MACS 10Gbit ethernet speed up transfers when using my 1gb switch with my current NAS drives?

Likewise, would using thunderbolts connectors to the external drive speed transfers up?

Or finally, should I just stick with the PC and the 3090 card as thats pretty much the most powerful GPU out there right now and the MAC wouldn't perform as well?

For comparison, The MAC specs I'd get are:

3.6GHz 10-core 10th-generation Intel Core i9 processor, Turbo Boost up to 5.0GHz
8GB 2666MHz DDR4 memory (but would buy 64GB pack 3rd party to save $$$)
Radeon Pro 5700 XT with 16GB of GDDR6 memory
2TB SSD storage
10 Gigabit Ethernet