u/Pretty_Plankton7381

Greetings all simracing aficionados!
I am a rather poor single father of 3 kids looking for some advice on what to buy. My oldest son is into racing, mostly Forza and Assetto Corsa, mostly on PC but also PS5 pro. I am looking to buy him something for Christmas good enough to keep on adding things to. What should I look for? I quite good with tech, open for good DIY solutions.
But I can’t just buy a nice steering wheel with force feedback, can I? He needs pedals etc, I guess?
Budget is about 300-400usd for Christmas. What should I look for? What eco system is best to start building in? Please help!