Further, air has to flow across the fins to pull the heat out.

May be I Did not clearly state in my post.Ok lets put real timelines in this.first the bank that owns this now  had probably a 1st mortgage... the IRS lein Is junior to the first mortgage.. when the bank foreclosed the IRS has 120 days to redeem if they don't their rights vanish into thin air.. so in practice no bank is going to sell a property until the 120 days is up.. and no buyer in their right mind is going to buy the property with the lien still there they simply wait a few months and the lien is gone and they buy then.. 

Prop #6 on a Right to Clean Air, Safe Water, and a Healthy EnvironmentShould everyone in Texas have the right to clean air, safe water, and a healthy environment?

*Rehab Costs (pulling numbers out of thin air)I have no idea what rehab costs would be for this property and would need an experienced investor/contractor to help me understand.

It may have hit load bearing walls, doesn't appear to have collapsed, so get the walls braced up immediately and get plywood on the outside to prevent weather or unwanted visitors.

I've realized that debt is more of a fear, and I need to use it as leverage, and a learning experience, and to stop letting it prevent me from bettering myself. 

I heard of some people allowing tenants to sublease detached rooms and either increasing their rent to (tenant would keep profit from sublease) or offering a discount if the tenant manages the subleasing through say air bnb (landlord keeps profit from sublease). 

It is very efficient, much less cost that traditional electric heat and is heats with far infared waves which heats objects not air. 

The shingles are not dangerous at all as long as you don't take them into a small room and grind them up while breathing in the air.

This can all be prevented by getting good tenants and checking up regularly.