Working on spec for first Hackintosh build

Hi folks,

I'm working on a spec for a first Hackintosh build and I'm unsure of a few things so any advice/help/suggestions would be appreciated. The following is the proposed spec and my wonderments... btw, I'm based in Ireland so buying from Komplett as all items can be delivered in one shipment. Therefore I am limited to what they have in stock. (Amazon suggesting 5 different shipments and some have to go via parcel motel as cannot ship to Ireland direct - PITA).

• I am unsure if the RAM will work with the MoBo as the mobo is Z370 and RAM spec says the "form factor is optimized for the latest Intel X99 Series motherboards".
• I am unsure if the GPU is compatible with the MoBo as the GPU RAM is GDDR6. Also wondering if it will work with OSX as the MSI version is not listed on Tonymacx86. I plan on installing 10.13.6 High Sierra.
• I am hoping not to have to buy a monitor as I already have an Apple 27" Thunderbolt (2) Display. I also have 2 other T2 external HDs and I'm wondering how to connect these up to the Hackintosh? Anyone have experience with this? 10TB in total so be a shame to loose them.
• Finally, is 750W enough power?

Case

Corsair Carbide SPEC-04 - Black Midi-Tower, 1xUSB2.0 / 1xUSB3.0 / Audio

CPU

Intel Core i7-8700K - Socket 1151, 3,7 GHz Hexa-core (4,7 GHz Turbo), 12 MB, Intel HD Graphics 630

CPU Cooling

Corsair Hydro H80i v2 RGB - Socket 1150, 1151, 1155, 1156, 1366, 2011, 2011-3, AM2, AM3, FM1, FM2

Motherboard

ASUS Prime Z370-P II - Socket 1151 v2, Intel Z370, ATX, 4x DDR4

RAM

Corsair Vengeance LPX 32GB - PC4-21300 - DIMM - DDR4, 2666MHz, 1,2V, CL16, 4x8GB

SSD

2x Samsung 860 EVO - 1 TB - 2.5”, 6,8mm, SATA III, read up to 550MB/s, write up to 520MB/s

GPU

MSI GeForce RTX 2070 AERO - 3x DisplayPort, HDMI, USB-C

Storage

Seagate Barracuda Pro - 6 TB - Desktop - 3,5 inch, SATA III, 72000rpm, 256 MB cache

Power

Corsair RM750x (2018) - 750W - Fully modular

I am a photographer, graphic designer and make the odd video. Primarily use Adobe CC, also FCPX

Appreciate all responses.

D