There are parts of my content-property model I'm not ready to share, but most of it has been structured into a cohesive framework of how I:
1. find niches 2. automate site creation 3. optimize w/ gpt (google publisher tag)
I'm sorry to say I won't be releasing that first... The first is due within the next 12-14 days, after which it should take me 1-2 months to finish writing & editing the adsense-property-model guide.
To leave you with something tangible, it's very feasible to produce 5-figures per day with only hosting cost as your overhead ($300/mo).
[edit] without automation tools though, it would obviously be very tedious to produce the number of properties required to have that kind of income by hand. process flow & site generation/management is the crux of this strategy.