I will deal with the sales agents. 

Found a house with the tax deed up for sale.

Hi everybody, there is a duplex for sale in my area for 90k with an unfinished basement.

Can you split the proceeds from a SF home sale into 2 down payments on properties of equal or greater value?

The appraiser found the hud tag on the i-beams when he did his inspection.This was never disclosed either before or after signing the purchase & sale agreement and nothing was said about it in the building inspection.So a few questions:1.  

It has lead to my first 2 deals and I currently have another short sale under contract for my 3rd this year.

The only issue I see here is if for some reason it doesn't pass the test post-rehab, I will then have wasted a considerable amount of money as the liability/ethical issues surrounding its rental or sale would be too great to assume.Any advice here is greatly appreciated!

The median Sales price in Tempe is 242k and I'm getting the house at a 20% discount.

Do not try to do everything yourself.Always do the math analysis and try to look at the subject property before you make an offer or at least have a clause in the sales contract that allows you the time (usually about 15 days) to make a detailed inspection and possibly back out of the deal without a penalty that hurts   Right after you close on a deal get an insurance policy that will protect you in case of a loss.Just do what is average for the neighberhood.  

Look at what's for sale and see what is and isn't moving.