Thanks for the feedback and opinions so far. I think maybe i just bite the bullet and buy brand new modern mobo, cpu and ram and just have a decent gaming pc for few years from now on. Not gonna lie, dual cpu did sounded like a good idea but seems like i`m wrong about that one...
Yea as much as current computer hardware prices suck right now, it would be much smarter to use the $200 towards something newer.
On the bright side, you can just reuse your case, PSU, GPU, and SSDs and get a new mobo/cpu/ram for now. That alone will net you way smoother performance all around, even in games (minimum fps should be higher and more stable.)