A mortgage loan is the ace of diamonds for installment loans. Obviously, it adds the installment loan into your credit mix, but as others have said, mortgage loans are scored differently. And why is this? FICO is a repayment risk analysis, and everyone knows that the last loan that you will go into default on is a mortgage. So it is big for credit mix, but any moron knows that a new mortgage, while putting you at 100% util, does not in any way reflect credit risk in the same way that having a credit card at 100% util affects your repayment risk.
No, I would not seek another install loan simply to pacify the FICO gods. I think you have done enough pacification to date.
Enjoy the house and the spouse!
SPOUSE??? Hey I decided on the maid....it was cheaper!