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Very! Hard to tell from here but it sounds like you have enough slope to forgo rollers & just use skids. And your challenge is to hold it back-- not pull it forward.
Remember to tie it off up near the eaves and down low- and don't make any sudden moves.
I work alone so the way I do it would be different from the way someone with lots of bodies would do it.
I'd hook a winch on it- get it to the hill- then put the winch on the high side and ease it down the hill.
With 10 people, I'd hand 2 people video cameras, then put 4 people on each side, each with a rope across to the person on the other side. We'd pick up the darn thing and have it down the hill in no time.
Jim