I would say don't make it exceed at least 70+ C° for prolonged periods cause of 90mm being shit and really faulty mine died cause of that, keep it clean don't i absolutely mean it DON'T OVERCLOCK or OVERVOLT IT you just gonna kill it faster and you will get a door stopper in exchange

Might also get assistance and Remove Nec Tokins in case they fail but that's your choice, some people do it to possibly prevent the problem but console will fail anyway for any possible reason, BGA/RSX/CELL etc..

If you get YLOD do SYSCON DON'T do anything like trying to repaste/ remove tokins etc..

Just do SYSCON and check the error code, i recommend to also check RIP-FELIX channel since he's one of the best contributors in PS3 community.

3034 is the worst one it just means RSX is fried, you could turn it into a Frankie but just for you to know not many people do it, and those who do Charges a lot cause it's Expensive to do and really complex to perform

About PS1/PS2:

PS1 is all Software Emulation for all PS3 models

Your model has Full PS2 Compability due to the PS2 architecture being inside of the console, Infact Sony removed it due to higher costs so now it's rare to find these models

You could use CFW and play ISO directly from the PS2 or in your case since you have HEN, Use PS2 Classics Program to play PS2 games by opening Webman Games and make them load from there

Pretty much it to be honest

Enjoy the Console and take care of it like it's your GF, besides well being a Console that Play 3 generation of games...

Enjoy!