with regards to the 5th overall pick vs 11th overall, the best way to assess is to look at the past and see what value both picks brought to their franchises.
heres the past 10 years worth of picks.
5th Overall Pick
James Livingston, Matt Duchene, Ryan Spooner, Justin Sefton, Mathew Campagna, Jordan Subban, Joshua Ho-Sang, Lawson Crouse, Michael McLeod, Zach Gallant, Ty Dellandrea
11th Overall Pick
Jared Staal, Peter Holland, Gregg Sutch, Carter Sandlak, Chris Marchese, Mitchell Dempsey, Damian Bourne, Blake Speers, Michael Pezzetta, Robbie Burt, Peter Stratis
i think theres a pretty easy call as to what gives you a better chance.
at the end of the day i think next year will be the top 5 pick year, theres only been 1 team that won an ohl championship/memorial cup who didnt see significant regression in the second year after the championship. theres no brown/luchuk/day group to help bank points next year.