Wildcard:Huge is an understatement... BTW how many days are we looking at here? Im thinking it wiil have to be in steps as much as I hate that.
I usually answer this one with "as long as it takes"...I know people don't like that answer

If it takes 4 weekends it takes 4 weekends, if it takes 2 years it takes 2 years...but either way I will feel confident in your abilities to not kill yourself and I will be able to sleep at night.
And one of my favorite responses to some of my student's after dives is "Baby steps..."