None of the cheap stators that I am aware of are worth much.
They claim 35 watts but that is max output at high RPM.
Your lights will not work on those 35 watt stators.
The battery is simple and you have the right idea.
Battery, lights, on/off switch, fuse.
If I remember right one of our members had a nice Ricky Stator for sale but I don't remember who or how much.