Find someone with a 24 foot ladder, and ask them if you can mess with it for 15 minutes. Try picking it up, moving it around, getting it upright alone, and getting it placed.
THEY SUCK.
Get a new house
One thing to get is a roof/wall standoff of some kind, so you're not putting all of that weight on the gutter or edge of the shingles. It'll also make the whole thing a bit more stable.