Growing Ensete Ventricosum Maurelii by the window

I decided to get a jump start on my Ensete Maurelii so that I can have bigger plants to bring outside by the spring time. I purchased these guys 3 weeks ago, and they have since put out a couple of leaves. The only thing I hope for is that their pseudo-stems stay healthy and strong, and giving them light from a south facing window will hopefully be enough.

There are 3 plants total.

November 13th 2012: They looked kind of skinny when they came out of the box.

November 21st: Each plant has grown a leaf, but overall there hasn't been much of a difference.

December 3d. 2012 After another 2 weeks, they have since put out another leaf, and the stems are finally starting to gain a little bit more thickness so they are starting to look promising. I hope they will fill out their pots by May when they will need to adjust to outdoor conditions.

March 8th 2013 update

These guys have grown a lot since the last pictures and the have turned much redder as well. One got pretty big so I up-potted it and removed it from the window sill.