LTQ,

#2, About halfway down Your, where the lake narrows, they is a nice island campsite. Big enough for a  small group. I would think in Sept it  would be available? Would make a great base camp for day tripping into Wildgoose/ maybe Boulder , IF you can't find the smallies your after and want some Waldo action.

#3, You can easily make it from Beaverhouse to Your in one day, but getting an EARLY jump on the day is the key. Sept, you should be getting the winds out of the NE. Since you probably won't need to stop at Ranger station on Beaverhouse, even if wind is up, you can ride the North shoreline of Beaverhouse and make it down to portage into Quetico lk. From there you take the short sand " pullover" on the peninsula separating Q-lk from West Bay. Even with winds, you should be able to get to Badwater portage. On Badwater, you can hug the north-shore and make it to Fair and then Your. Winds generally pick up later in the day. If you can be thru Badwater Portage by mid-morning, you shouldn't have any problems, even if you have to fight the wind on Badwater,which should be in your face at that time of year.