Last year we took my 8 year old grandson to Wind Lake for 3 days. That portage isn't bad at all.
If you want to read more about what Wind Lake was like for us: http://www.vnorth.com/images/pdfs/vno_gazette_2013.pdf
Have a great time, don't wait too long to reserve your BWCA/Moose Lake permit!
Not to commercialize, but just to let you know I am one of those "outfitter types"
1829 East Sheridan Street
Ely, Minnesota 55731