Are you in Eastern Texas anywhere close to Canton, or Dallas?

I happen to know of a few people who have large collections of running bamboos who will likely have what you are looking for. It's best to get a screen of bamboo from a massive division with multiple culms so it can take off right away.

It's fine to plant now as long as you keep it watered. Are you interested in visiting a bamboo garden with dozens of species? It won't cost you much to get it from a collector especially if it is a species in excess that can be dug up with ease.

I live in San Antoniof but I willing to drive for a little bit. If I did that how long would it take for the root system to get set in

At this time of the year, they should set in and send rhizomes withing 2-3 weeks of transplant. Get me your email, and I can send them their contact details.