First time hackintosh builder gathering parts for my new build.... question about graphic card.

Hi guys,

I finally decided to build my own hackintosh. I am in the process of gathering (second hand) parts to try my luck building hacks. I plan on build Catalina and reading the guides on OpenCore and how to build this stuff in the first place. I am a long time Linux user so I know my way around terminal stuff too.

The parts I own for the build:

CPU: i7 3770k
Motherboard: Asus P8Z77-V LX
RAM: Kingston Hyper X 1600MhZ 16GB
SSD: Kingston 128GB
HDD: Western Digital (Caviar Green) 1TB

Now my question is about the graphic card:

I have the option to buy Sapphire Nitro RX 570 8GB but I am not sure if this graphic card would work out of the box? Tonymacx86 recommends the RX 570 Pulse 8GB edition. Pulse or Nitro does this even matter, will the card I am after work?
If I pay a bit more (like $50) I can get the XFX Radeon RX 580 GTS XXX Edition which is recommended.

And another question to experienced owners, will my i7 3770k be enough for Catalina? I'd appreciate all help I need.