I know rents are always going up, it will appreciate in the long run, there's tax benefits and there is definately room for potential value-add.

Is there a benefit in having the properties mortgaged with conventional financing and then going to a commercial lender for a blanket loan?

You will still benefit from having a paid off house (aside from the HELOC). 

I guess the upside is this young lady seems to be honest and could benefit from an ESA, I am highly annoyed by people who do not have the need and try to lie their way in with fake online registrations but this seems valid.

If you don't need the additional income, looking to generate long term wealth, tax sheltering benefits, etc buying for appreciation may come more into play.

, I'll just gift them with a really nice and juicy 1099 so that it screws up their tax return and other benefits income.

If you don't, then I probably will benefit from that same appreciation as well.Rent control, eliminating no-cause evictions, inconvenience payments, those crush values much more readily and to a greater extent (usually) than a bubble burst -- there's no way to work around them and there's no opportunity to take advantage of.

@Aharon NajafiYou can try to explain the benefits and assure the listing agent they will get their commission.

Using the advantages and benefits of your VA loan is very smart to do at your age and if you hit it right on the neighborhood, after you live-in for a year, you could be looking very good for a refi so you can go do it again elsewhere.

It will be recorded by title company as first lien. so my question is  who keeps the Original signed documents after recording.It will be kept with title company, or as a lender I should have original documents.I did lending before at that time I didn't get original documents , title company just email me digital signed bundle of all documents.What is benefit/loss(if any) if I as a lender insist for original documents.Thanks