Understood, I'll look into that more and make the switch!
I just got done sorting out some stuff, firstly the cabling. I couldn't do much more did I want to go overboard. Just hid some of the extra cabling from the PSU. Short of a new case or a modular I'm not going to put in huge efforts to only see moderate results. That combined with an unpainted case, not worth it right now.
The other was the top vent. I don't have a fan installed so no positive pressure keeping stuff out. It's also under a desk so being a horizontal surface a lot of shit was going in so voila, sheet air filter material to keep the nasty out. It flows well, and the temperature increase if any would be so small I'm not at all concerned.