Glad to hear that things are looking up.
Good move, there will be plent of time for pruning/styling later.I haven't pruned my tree at all (yet) as I wanted to let it grow and didn't want to distress it after its 'drought'
The light behind a window, especially behind the louvers is not as intense as you might think. Some supplemetnal lighting would not hurt and please think about the possibility of getting it outside this spring.After doing some research I found that 'giant' leaves can be due to lack of light. However my tree is in a west facing window and has a good 8 hours a day.