Kalitta is very reputable - in my estimation it is
Post# of 41413
I think that barring any unforeseen complications with the maintenance, early May is a reasonable expectation. I may be reading into it a little far regarding the relationship between Baltia and Kalitta, but I'm inclined to think that Kalitta would not have sold them a dud airplane. I'm venturing a guess that Conrad Kalitta stands to make some good money on the deal separate from the hangar space and use of facilities.
Now I am speculating pretty hard, but it's Sunday, it's my birthday, the market is closed, and I can't think of anything better to do.