It's pretty much bounded by the limit on your charge card and whatever weight you want to pedal uphill
That’s like the rear of an old VW. I picked Macpherson struts because they sit low, make a lot of room between the uprights unlike wishbones which need to mount the upper arm, and the whole strut rotates which would help with packaging the steering. But thinking it further I guess the benefits of an independent suspension don’t really help that much when you have round tires and a live axle would do ok too.