Don't ask them to help you, ask how you can help or add value to them, and they will reciprocate.If you just want to throw money at it, look for and talk to at least 5 other mentors, and see what they offer, or what you can barter to get their help at a lower cost to you.

This would produce a much lower top line revenue but my net profit would be potentially higher because I am capturing a high percentage of the rent collected.

Why do you want to trade a loan with lower interest rate and lower mortgage payments for one that is higher in both instances.I think your Cash Flow may be a little optimistic.  

Is it really possible to purchase a home lower than market value?

So it’s better for me to refinance to lower the mortgage payment and get more cash flow?

I imagine for a rental property you would want to stay towards the lower end of that I know I would.

Write-offs, knowledge to lower my taxes substantially, write-off's you don't commonly think of, things like "paying your kids 12k a year", and "using 'vacations' as 'team building' exercises for said employees, etc.3.

But it could be more difficult if you work 6-80 hours/week and buy properties that require extensive rehab/have lower quality tenants. 

However, using a HELOC to finance your next property will probably be easier (if you're buying another "project") and cheaper (you'll likely get a lower interest rate). 

Always be researching ways to increase your income instead of lowering the expenses.