Double taxation would be when you have to pay US income tax and then also Canada income tax and you don't receive a credit for your US income taxes.

You might want to check with local credit unions or community banks, as they’re often more flexible with second mortgages. 

It's very hard to win with low money down in Northern NJ.

Yes starting out there is a low dollar per hour but at some point it needs to be worth the while - as you could be spending that time doing something more profitable.Not saying to give up by any stretch just saying make sure to re evaluate consistently to put the best strategy together

They have several other LLC's such as Home Partners that purchased properties at low prices and then quit claimed them to Guardian and then Guardian sold them to people who needed to 1031 exchange money into another property.

I can use my credit cards to buy things.3.

The seller doesn’t need to know that the underwriters may give you more of a hassle than other buyers.Or do you have lines of credit or a private lender so you can make a “cash” offer then try to get the financing through before close or at worst just do a cash out refi after close?

In the times I have seen it, it has been due to the borrower saying they have like a 720 credit score and it comes back a lot lower, or the financials of the deal are not what was represented. 

Generally, the properties that benefit the most from a cost segregation study are properties that are remodeled, expanded, purchased or constructed after 1987, the year in which the Investment Tax Credit was enacted.

Your best bet for that size will be local banks and credit unions, good luck.