Hello greenhorn321..This tree is very young.. Actually it is too young for this much work. It should actually be left alone to recover for about 3 years... Also, if yo try to put it in a smaller pot and do any sort of root pruning, you may kill the tree. I would leave it in the large pot and fill it in all around the root ball with good potting soil.
If I may suggest something.. Since you are new to bonsai. You may want to leave more foliage and branches on the trees you work on. This way, you will have more options and will not be risking the health of the tree. Stripping a tree down to a skeleton is generally reserved for much older trees.
I hope this is helpful.
Rob