but if they cannt afford 20% down ($60K), they are a high risk of not making payments; and there are legal costs to foreclose and get your property back

are you looking for short term loans that payoff every 6 to 12 months or longer termthat will determine which direction you may want to go in. probably not enough to do much in CA to start unless you want junior position which is highly risky for you.

You can't give up even after days/months of not producing results, which is highly unlikely. 

What is the rate/structure of the loans on them - is this Hard Money - high rates?

It seems quite high to me, especially considering I'm still relatively new to this field.

If the loan amount exceeds $1M, then rates are in the high 6's to mid 7's. 

I don’t think this is the quality of guests you are looking for.

There are some construction loans that will fund up to 90% of the build costs with qualifying income but again my debt is just so high because of these other mortgage payments on my credit.Somebody help give me the answer I'm looking for so I can create this unique stay!

I buy them because they will be very good properties to own in 10 years from now.Cashflow has always to be considered in the context of the quality of the investment.

Above ground, unless a huge amount of great landscaping (and high maintenance) would be need to make it pleasing.