Seems like you might be biting off WAY more than you can chew.

If a mouse chews through a wire?

If there is more than you can chew you can ask for a premium.

@Tracy MungerHi Tracy,If you're going to poison the mice make sure you tell your tenants about this ahead of time, the day of, and while it's happening--because if Fido the Dog or Fluffy the cat eats a poisoned mouse or chews up a poison box you will have some very unhappy tenants.They make poison boxes that contain the demised mouse vs letting it run around until it collapses--think about asking about something like that, and let the tenants know what it looks like and not to touch them or move them.Good Luck!

Maybe chew on some boxes or clothing, but for a single mouse to utterly destroy an entire collection of Christmas presents doesn't make sense. 

@Lyman DeAnn-Gaines II, as a lender and developer/rehabber myself, I would agree that you should give good consideration to what you are able to "bite off and chew" on this first purchase/project. 

Am I biting off more than I can chew having no experience in this field?

Just my opinion but food for thought for all to chew on.

But my concerns are that I'd be biting off more than I can chew.

Thinking cost of converting that loan would not cover the LTV needed, so would need cash at closing, which in turn chews into the cash needed to buy the multi family.