Seems like an upgrade is necessary for my use case

I flashed my Tp-link Archer A7 with openWRT and did basic set up. I tried to install NextDNS and learned that I don’t have enough storage. I also read that the A7’s cpu is too weak for SQM/cake for a 500/500mbps internet connection.

I’m a beginner at this so I figured I’d defer to chatGPT and you guys to help me.

Chat says to buy a miniPC and run openWRT on it to handle the SQM and use my archer A7 as basically a switch and WiFi AP.

However the price of mini-PCs is $180ish.

Can I just buy a GL.inet MT6000 router and call it a day?

Use case: PC gaming via Ethernet 3-5 devices on Smart home stuff via WiFi A phone or two connected to WiFi

Any input would be appreciated.