Currently, I am looking at deals ranging from far North Austin to San Antonio and anything in between.

If you can't find it, adjust to what you can find and adjust your plan accordingly.I bet you'll get a lot of far ranging answers to those two numbers. 

I have a range of interest rates for the financing depending on the type of loan I get.

The follow criteria is what the park is consisted of:Rent control all age park with pool 33 space filled - rents range from $321-$7002 POH renting at $850, electricity sub metered 1 empty lot (might not be permitted for extra 3) On Septic (2x a year) and Well (370 ft deep send sample out once a yr) sitting on 4 acrescan only raise rents 2% every Dec20-21k gross per month/ 25% cost of utilities -- 900k left on noteNOI might roughly be around 170-180k

There is a large shopping center there, Coyotes play near there, Cardinals Play near there, concerts are hosted there, and AZ Dbacks may be looking for a new home soon.I recommend for you to receive MLS listings for multi family homes in that price range so you can see what $450,000 would buy you. 

It ranges for many different reasons.If the lender you are planning to use says it is going to charge you $7k-$8k then put that number in there.Though, I must admit that does sound high.

I have a unique situation as my dad has money he wants to loan for me to invest, and wants to help me get the ball rolling on my path to FI. 

and know my target price ranges..now I just need to find the properties.

$400k may not be much in the 5 boros, but there are definitely properties in those price ranges. 

Both are financially strong ( all of our investors are accredited) and have other relationships with the banks.There are also some smallish private equity funds that will lend at interest rates in the 8-9% range on portfolios of notes, minimum loan size starts at $1,000,000 with 60% max LTV.In both instances the lenders want to see the quality and performance of the underlying notes being used as collateral.