I looked at that note. The numbers are good, HOWEVER:
1) The taxes are inaccurate. They don't list city and county, just one of the too (think they owed like $600 additional)
2) I'm not an expert on Memphis but I have a note in a neighborhood close to this one. It's my understanding this is part of the ghetto. It's going to come with ghetto problems. Finding vendors is going to be tougher / more expensive, you're more likely to deal with squatters, vandalism (even with a BPO), etc. Less potential buyers / renters (it takes a special kind of investor to buy in ghettos)
So.. if everything goes right, it's a great low priced note for you to practice on and potentially make $$$. If things go wrong it's going to be a hassle but you should break even. Use this as a learning experience, don't expect this to be a huge win.
PS: My philosophy is if I'm going to spend money on due diligence and legal fees (since this is almost guaranteed to be a FC play) then I'd rather do it on an asset that's worth 40-50k+