Nursery guys: how to best grow climbers in close proximity

[kalan]

So I was looking to grow a bunch of climbing vines in 1-2 gallon pots but I need to keep them in tight groups due to space. Does anyone have suggestions regarding 1. A cheap yet effective support for the climber (a single bamboo stake?), and 2. Whether or not to simply keep pruning/pinching the top to maintain a bush shape until ready to sell/plant out.

My concern is that they will all begin wrapping around one another and make separation a nightmare later one.
Suggestions?
Thanks, Keith