Congratulations on the approval!!!
Just a suggestion, with your score and if you want to bring utilization down quickly in a couple months. Try to get a couple store cards. Card such as IKEA Projekt (you can check for pre-qualified) from Comenity can gives decent SL and double dip CLI upon approval and almost guaranteed SP CLI every month. Wayfair and Overstock also are great cards to get and can grow very quickly for utilization padding.
I personally woulnd't suggest that as it gets your aggregate utilizatoin down, your individual cards it doesn't help thus still the big score hit and adding useless tradelines isnt a good thing, etc. It is the utilization on each indvidual card that is the killed being say at 90% each not your aggregate of "useless" including your others being at say 50%.