How much time should i allow tenant to move out?

[Shane H.]

Here's the link to what led up to this: https://www.biggerpockets.com/forums/52/topics/727317-plot-twist-tenant-gave-me-a-fake-vaccination-record?page=1#p4285485

I will be meeting with them on the 13th to be asking them to leave. Preferably they would agree to move out. But i foresee some major issues coming up that i could really use some help with handling.

• How much time do i give them to be out? Sooner the better obviously but what is reasonable?
• They are flat broke. I know that isn't my problem, but it's the reality and if they feel that i'm putting them in a desperate situation they could lash out in any number of ways. I can offset this by offering the carrot of giving their entire deposit back once they're out and the place is left clean, but $900 is not enough by itself for them to find and rent a new place in such a short time.
• They have said they'll be paying most of July's rent on the 12th (partly why i'm meeting on the 13th). But chances are i will not be able to collect the rest of July's rent and still have them out. 
• Lastly, do i still proceed with the eviction if they say they will move out willingly? I can stop the process once they're out, or do i just get something in writing that they agree to be out by X date?

Thank you everyone, I could really use some advice on this one.