Get those that are foldable.   Most of these setup do take up space depending on the seat incline or not

realistic clutch??

Then start small. Like what the guy in video does clip the steering wheel on a small table use a comfortable chair.   After playing a while slowly upgrade. Taobao might have a lot of cheap setup but just make sure they are compatibity to your driving equipment.

G29 is a nice wheel to get. If you like truck driving,get a shifter since G29 has paddle shifter (that like formula racing)

Next level racing has flight seat.   Depends whether you into military or commerical flight sim, simple joystick from logitech or low end thrustmaster.   If serious need to buy flight modules to build up the cockpit panel