You need to verify ability to pay and willingness to pay.
Ability is based on income, assets, and other debt. You’ve done this, looks good.
Willingness is based off of credit scores, credit report, and prior rental history.
You have a less than desirable credit score, probably no bankruptcies or evictions, but, from the sound of it, a good rental reference. Though, as another poster had commented, make sure it is actually the landlord you spoke with. You may even ask to see their current rental to get an idea how it looks, too.
From what you’ve told us, looks like they would be reasonable tenants.
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