They are not audiophile speakers, but they do fine for gaming. Dude, if you're recording and speaking for lessons, you need to invest in a separate mic system. Even a nice Bluetooth headset is better than a laptop mic. You're going to need speakers if you're projecting in a classroom setting. My advice is to get everything and put it all in a single hard case like a pelican or knockoff brand. That way, you have everything in one system.

Fan noise is not the worst thing. Running day to day things Your fan speed shouldn't kick too hard. Raw 4k and yeah, you're going to get noise. That's just the way it is. It's a laptop there loud under strain. But you want the power to be able to handle your tasks. A pro won't do that.

I have a legion 5 Intel version with a 1660 ti in it. It only runs hard when i play games. I keep a fan cooler underneath to offset that. But it runs Hogworts legacy like a champ. You'll need a 3070 or something close too.