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Those paid, closed collections won't be a problem and the score is sufficient.
Exactly. You can most definitely get approved for a mortgage. Your loan officer may ask about them, but they'll give you a chance to explain what was going on at the time if they do. The important thing, the fact that the collections are paid and closed shows them that you're on the right path. After a couple of years, paid charge offs don't count against you as much.
You guys have done great work!
No problem at all.