So I've been doing some consideration with what I've been doing with solo mining so far.

I feel I've been overdoing it and spending way too much for something that's meant to be a very inexpensive mining set up.

There was an enclosure I made for my ASIC that was also running as solo miner and now feel it's overkill. Instead I decided to build a GPU mining rig that can also do CPU mining.

There was a build I saw that I liked and wanted to get others opinions on it.

This rig would be a cheap one, I'm okay with buying used parts, on some things, but some I would buy new.
I would also want a robust setup, that the parts are specifically designed for mining so it won't burn out in less than a year. Then also a rig for someone that is starting out and doesn't want get the top of line gear, or have 10 GPUs running at the same time. Here are the components:

Motherboard - Biostar TB360 BTC Pro 2.0 (USED)

CPU for CPU and GPU mining - Intel Core i7 9700k (USED)
or
CPU for GPU mining only - Intel Celeron G5925 (NEW)

CPU water cooler (NEW)

4GB DDR4 Ram (NEW)

Storage - SSD 60GB (NEW)

PSU - CORSAIR RMe Series RM1200e ATX Power Supply, [80 Plus Gold] (NEW)

GPU - x2 INVIDIA CMP 30 HX

OS - HiveOS on Linux

Some of these components are the typical GPUs, or motherboard, but specifically for mining, they are also very inexpensive, available used and will/should last longer than conventional components.

Total cost could be around $600-$800.

What would some thoughts be on this setup?