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If I were in your shoes I would be looking at conventional and not FHA.
You are almost identical to my husband and I and we're closing on Wednesday. Our home was a little higher priced than yours, we're FHA at 3.375.
Good luck!
I'd say that your chances of approval are decent, but you really need to get that 70% utilization figure down to something more realistic.
Folks are correct, our utilization was only at 6% - take some savings and pay down your debt and you'll be golden!