I did a quick search in your general area and found this listing in Lambertville (not right next door for you):https://www.redfin.com/NJ/Lambertville/92-Swan-St-08530/home...Take note that they bought it for $197,000 in January and now have it listed for $499,000 - which might be kind of high, but gives you an idea of what a flip looks like in your area.

It sounds like a decent idea to put that $100,000 to work by helping fund down payments for fix & flip projects.

A good CPA will help you save a ton on taxes as your wealth grows.Market Appreciation is where you will make the most money over a 10-year period but is the least predictable.

I do agree that getting Avery Carl's book is a good idea - https://www.amazon.com/Short-Term-Rental-Long-Term-Wealth-Pr...Great info in there and it will help get you started.

Your $18K saving will not last long.

But, the general idea is, that one investor is the capital provider and the other is the expertise provider.

Look at it this way - if you reduce your cost of living from $2,500/month to $1,750 then, hey, you're saving money, but you HAVE to make sure the INVESTMENT property will be a true cash-flowing asset after you leave (inevitably, someday, you will). 

Ultimately, if you have to pay for the card production, do you save any money?

By making extra payments or paying more than the required amount, the borrower can accelerate the repayment schedule and potentially save on interest costs over the life of the loan.

@Darren Maloney If you are obtaining REP status, cost segregation and bonus depreciation could be a great tax savings benefit to you.