I have interviewed and signed people 6-8 months in advance. I would get the signed contract, deposit and make sure I have a good feel for the family. It has always worked out. I wouldn't hesitate to do it for the right family.

I guess the holding fee for July depends on the demand in your area. If there are less spots then you can probably get payment for July or half a month of payment but if there are lots of other daycares to pick from then it might be a harder sell on why she should pay you. Personally...I will hold a spot for free for a few months if the family is the right one. I would rather have a good match and lose out on the income for a couple of months but know that I then have a good fit that will stay with me for years. It is all a matter of what you can afford, feel comfortable with and what your area is like.

Good luck with the interview