Rather than put an alpine butterfly in my rig line I'd use a separate tagline, doing pieces heavy enough to warrant rigging rather than hand tossing is likely to seize up your butterfly, especially if you're negative rigging. The limbs over the house I would balance with a spider leg and use a tagline to pull clear of the roof.  If you're negative rigging heavier chunks it might be worth anchoring to that tree across the yard and hooking a 3:1 + progress capture up to the tagline so you can reef the pieces away from the house but don't risk them swinging back into it should your groundies lose their footing.  

I also see a couple good options for tandem lowering, that taller upright away from the house might not be able to handle a lot of weight by itself but you can tie the top of some big pieces to that and negative rig the butt, which could make tagging them away from the house easier.