It is quite a complex transaction so there needs to be time allowed to each party to complete the tasks required prior to closing. A quick read through the agreement (link posted earlier) gives a reminder of the breadth of details to be considered.
That said, my preference would be for the deal to be cash/debt 100% rather than a large % via equity. I would be very comfortable with them increasing their debt to finance the deal. The new orders alone validate the idea of the acquisition paying for itself via increased revenues to the merged companies.
I agree that even financed with 100% equity, it would be accretive but I am hoping that the mix is way to the cash/debt end of the spectrum which IMO would be a better value in the long run for shareholders.