If that's three different plants, you
should really space them out more. Maybe one setup like this for each plant to get them started the first year. Look at how vineyards are spaced. As tiny as they are now, they'll end up growing into as much space as you give them (or more!)
Once a trunk is established, the vine will trail along anything--and arbor, fencing, wires with supports at intervals. Pick a height that is easy for you to harvest from, and build a support.