Will you be going clockwise or counter?
This loop shouldn't be too difficult.
I would recomend doing this in 5 days.
This way you go to Videttte night 1, Dollar/ Rea Lakes are for 2 & 3, Upper Paradise 4, and back on the last day, (5).
Or the other way.
You really want to spend the extra day at the lakes for the excelent views.
The climb is not too horibly steep but very consistant, so wieght will be a factor.
Good luck adn have fun!!!