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You took your biggest hit because of the new card on your account.
Like Pizza said, I would not worry about the student loans. You just bought a house and you will not be seeking new credit for a little bit. You should only consolidate your student loans if it will benefit you in some way. Your Fico will change day to day. You might even get a little boost to your score when your mortage starts reporting.
I just consolidated mine, when the new accounts started reporting I lost 6 points on my EQ Fico. Still waiting for the others to show paid to see if that does anything. Currently my old loans had an upside down balance.