I was the first to pick (Highest Last 4) 717s in my indoc class and had exactly one week between indoc and start of 717 training. The 14th out of 14 717s in my class had to wait about 2 1/2 weeks between. I would say for most airframes you can expect anywhere between 1 and 3 weeks and once again the higher your last 4, the shorter your wait will be.