You can get 50% to 65% LTV on raw unimproved land, or if there are horizontal improvements, you can get 75% LTV to finish out the horizontals.The construction loans will give you 85% to 90% of the LTC or loan to cost, but these will only be done on an individual basis. each lot on its own loan. 

Please share any great data sources you have found or tips on evaluating areas.My 1-year goal is to purchase 3 multi-family properties, with 8 to 40 units, at least $5000/month of initial cash flow, and some opportunities to improve operations and increase cash flow.I am hoping to forge alliances with like-minded investors to fund Win-Win deals.I am so excited that I have officially started my RE Investing journey!

-Would it be better to ask for the down payment loan and construction loan from the same party, or are there any advantages to seeking loans for renovation costs elsewhere, such as HMLs or even credit cards?

If the DSCR is strong, as is your experience and credit AND you've owned it longer than 6 months, it's usually pretty reasonable to get 75% of ARV.

Lets say you take out $150k loan against it and spend $25k improving the property and the other $125k on another property.

. (# and size of offices, bathrooms,doors, windows, floor drains, lights, truck docks).If you make an educated guess you will likely still be tearing out or changing brand new walls and concrete, but if you leave it incomplete it is harder to rent.Plan on some extra expense for those tenant improvements.

When screening potential tenants, be sure to check for credit history, rental history, and ask for references from previous landlords or roommates.

Typically 30Y fixed, refi into an LLC, low doc loans that don't report on your credit. 

As soon as I create the LLC, I go to the bank and open a checking account, savings account and apply for a credit card in the name of the LLC.

The non-tax Depreciation Expense (assuming 80/20 improvement to land) will result in an annual $11,132 ($382,650 * 80% / 27.5) depreciation expense which will exceed the $3,000 IRS limit but will guarantee you have no current tax liability for this investment for a long time.