Go spend millions building your own software.

Buying a Multifamily or home in a C, D, area should come with a lot of equity as it is the only reason to get into any deal for these areas as you don't want to spend more than upfront out-of-pocket cost.Look up Cap rate, Cap Expense, Insurance Expense, Vacancy Expense, Tax Expense (which should include a licensed pro at some point), Real Expenses in relation to owning Multifamily real estate, and other things you don't what to be surprised about before doing your first deal. 

-if you choose to invest in a syndication, you may want to spend months or even years building a network and finding one. 

If I need to spend 6 months on this I am losing 20K almost for nothing.

look at your experience level with reality in mind.I would want to feel very comfortable about those things before spending time on deals and money when i had no real capacity to transact no matter who the lender was.

I have an opportunity to build mixed use apartment and I want to get an expert thoughts on the projections and what should I be spending on construction to make this project profitable.

Bigger Pocket is a very good platform to find people to help you. if you have half a million lying around, then I would say spend some money for these courses. 

---You'll have to spend thousands to bring it up to S8 standards to pass their annual inspection.

You should only consider switching when your current software has a significant flaw or lacks features that force you to spend excessive time on workarounds.

It's updated yearly and is the best $40 you'll spend as a Landlord.