- Will a signed affidavit from the siblings have any legal merit whatsoever, allowing them to sign off on the sale of the property?

Some lenders will give you love up to 760, typically owner occupied jumbo lenders.All those points above and beyond that are just for your ego, they serve absolutely no purpose whatsoever. 

I am with Kyle on this; I see no advantage whatsoever to having a separate account for each property.

Having said that, I am working with a multi-store chain right now that just overpaid for a parcel....is paying through the teeth for construction.  

It seems asinine to an experienced investor to wire money or behave foolishly to unlicensed people you meet online, but people still do it, and just because someone says he is a Private Money Lender does NOT mean he has any credibility whatsoever. 

Unless your extended family is going to loan you money, they have no say whatsoever in how you spend yours.

All I know is when I lived in a rental, I caused my landlord no problems whatsoever, but in our "tough luck, sue me" society, it's better to be paranoid sooner than later.  

The dog is friendly when they are around but when we entered the house without them in the past he snarled and showed teeth.

If I determine the seller cannot be trusted to tell the truth in any fashion whatsoever, I would have absolutely no faith in disclosures and the like. 

However, if you are new at this these are allows good to cut your teeth on.