Given the complexities involved in assuming multiple properties with existing loans, consulting with a real estate attorney might be wise.

@Viral Mehta we understand that you want to save money, but investors are often penny-wise and dollar-foolish!

I’m a little lost on this as you could bring her in equity wise like the parents or on similar terms. 

At your age, securing a W2 job to build capital and savings is a wise move.

Price wise, houses in the area mostly follow (roughly) national inflation rates.

Lawyers do get a little more education time-wise though, so it's all relative.

A wise investor will not try to get rich quick with shortcuts.

Your debt you are taking out does not incur any taxable event, so using that capital for your purposes is wise if you want to keep the asset the debt is held against, assuming your getting a better rate of return then if you didn't have the debt. 

when your dealing with a borrower with experience...its not wise to control the Construction, Its not smart to smudge HUD's (i took myself, title and attorney days to figure out my closing cost went from 25k to 40k)...later to find out most of it was in fees and paying 12 months in advance of mortgage payments.

With Current interest rate, would be wise to pay cash, specially if you're in a position to do so.