How to screen College Student?

[Jon K.]

This is a roommate setting with me living with this potential "tenant."

Month to month lease, 30 days notice either side.
Tenant is a full-time college student who attends classes a few days a week.
No job. Has worked before in the past.
Financial aid to pay rent.
No car, will walk very far to nearest bus then take long bus ride to school. Plans to get a car at some point.
No evictions or record that I can see.
No rental history-- has always lived with mom or a relative.
Relocating to this area, not a local.
About 22 years old.
Has service dog.

There's no rental history and no job, but no evictions either. I verified college.

Deposit is half of one month rent. First month rent due at lease signing.

I sometimes work from home, and without a car, this person is going to be here all the time I'm sure.

Would I be crazy to accept this person?

We're getting close to October, and I can't find a decent non-smoker match who doesn't have a massive dog, an eviction, or a record.

Am I likely to find a better last-minute match over the next week, or should I take this person? Are there any responsible tenants who wait until one week before move-in to find a place?