Not sure to be honest. I would say if you can put up a shelf you can make a wheel. And slightly wonky is ok but you can always remove the wonk with practice. Other than a spoke key you don't really need anything else - truing the wheel in an upturned bike is fine.
But it's really down to whether you like doing that sort of thing or not. It you don't then don't bother because life's too short. It does also depend on what you want the wheel for - racing on the track maybe not. Commuting go for it. Wheel building thread is place to go if you want to go that route.