RichKid,
If I was you, I would water and fertilize and leave the plant alone, unless it grows so much that you cannot keep it watered and only then restrain it's strongest growth.
After the above, I would then cut it back next late winter/spring before the buds pop. Timing will be based on your climate, not mine, which are substantially different. The new buds that emerge after your second chop will be so strong that whatever lower branches you have now, even if you try to strengthen them through pruning this year, will be considerably weaker. Unless they are in perfect positions as new leader or branches, I wouldn't worry too much about them and anticipate replacing them with new, more vigorous shoots next year. After next years new growth starts to harden, you can wire to position them and add some initial movement.
You want to regrow roots and strengthen the tree as it is as much as possible this year. That comes from watering, fertilizing and unrestrained growth.
Regards,
Martin