Hi thinpossible
I have a miniature Australian Shepherd with a not so miniature amount of energy!
<--------------- this is her, Kammi
We walk her everyday, 2mile walk + 30mins off leash playing fetch at the park.
Backyard play, house play and short walks will just not cut it. Aussies are not only high energy but the are also very intelligent, they need activities / jobs that will tire them mentally as well. I agree with AuntyJam - try Dog Agility or other fun activities that will get your dog thinking.
Because yours is mixed with an Eskimo it may not need quite as much but I would say you are looking at at least a 2mile walk everyday.
They do need A LOT of exercise! And they love it
But with enough exercise you'll have a happy, both physically and mentally, and healthy dog!