I wouldn't really call that root bound andy. Google some pictures of root bound and you will see lol. Dude nice looking bud, it was a small yielder but made up in quality, good job I believe you will be great if you get the proper set up. The roots were however extremely white that is the sign that the plant lived a healthy life, you want all your plants to look like that for future reference. Which is why I like starting in small pots so I have to transplant this way I can get a look at the roots from time to time, make sure nothing is wrong down there. Good job dude keep up the good work.