I think you will be fine.  I was told not to open anything new at all once I started the process and had been about 6 months out from my last apps.  I did do a money shuffling installment loan in the middle of my application, but it was to improve my DTI and it was OK'd by the LO and UW with a letter of ex. 

I cannot WAIT to close on my house so I can app for Navy and Lowes!!!