Help before buying vr headset

Hy guys
Im new to the vr gaming. Tried it on a local cafe where they offer to try it out since then i need one by myself
Three questions
I need it only for simracing. I often see offers on the web where the sell only the headset and the controller not the lighthouse stations
Is it right that i only need one to use it when seated?
Second one: my gaming setup is behind a drawer in a darker room. Do i need roomlighting for it or is it working when lets say my tv is on? I put a picture from my setup below
Third: i run the vr programm to see if my pc is capable of running vr
the result was above the middle from the green bar
My specs are radeon rx580 a10 6800k amd cpu
8 gb ram
Is this enough? Only for iracing and assetto corsa

Thanks guys

Attachment 3668

iRacing is awesome, but it is a memory hog. If you are using a Vive, you have to get the lighthouses for it to work at all, even seated.

My recommendations:
16GB RAM minimum -- 32GB is where you should be
RX580 -- at least 4GB video ram
I would recommend at least a FX85xx processor, anymore a Ryzen 5 or 7 would work well.

Ok, but can i install the headset even with only one base station and no controller?