The building already has long term tenant and I will be going in making a profit. 

I currently own a home purchase back in2013 which I can almost make a profit of 110k.

How can you profit $300,000 when the ARV is only $259,000?

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However, the account fees, transaction fees, asset registration, check fees (some custodians even charge for both incoming and outgoing), etc. form a good chunk of money eating away potential profit. 

They also get  30% split of profits above 7% annual return.The 1.5% origination fee is a commission essentially for bringing the deals to the investors and is paid as equity in the deal, not cash.My questions are these:1) Is an origination fee/commission standard for a scenario like mine?

I did a quick research and it seems many people are doing it and there isn't anything wrong ethically or legally, so is there something wrong in subletting for profits that I'm missing?

To be most profitable, know that you shouldn't stay at your property during those times.The easiest route for you would to buy a Condo-Hotel.

But even then, I know I would not be able to refi out enough to get a HML repaid, so I would have to flip the property and the final profit out is 12k, minus the points + interest paid to HML and the cost to sell.

Is it typical for larger homes to  command a higher LTV(80-85%)  from cash buyers since the potential profit is larger dollar wise?