I don't think anyone can tell you exactly how much your score will go up. But that $7500 card with the $7050 balance is definitely hurting you. I would try and get that below 50% if at all possible. I doubt that will give you a 60 to 80 point jump, but it will help.
The good news for you is that late pays (especially 30 day) age rather quickly.
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in a credit-scoring postnuclear Stone Age...