Not super helpful, but I have rowed under it without too much difficulty at 2600 and put-in below it at 4k. My recollection from 4k is it would have gone if you had been in the exact right spot but that wasn't a guarantee at that point.
Definitely scout it. Its right at the turnoff for the gravel road to the put-in. If you don't like what you see, just put in right there. My recollection is you can do this 100% on state land without trespassing on either private land or the railroad ROW. You miss #1 which is a bummer and your very first feature is the hole in 1.5 without warm up!