Go back a couple years if you can, because so many players in this game are only "One-Year Wonders".Online Sales:  Most of FL (RealForeclose) are online, but I recommend going to the ones you can in person. 

I am a looking to get my first deal and am trying to nail down a source of funding in advance (along with all my other key players).

Yes but the loan has to be approved first before getting the down payment paidThat's a big red flag to me. 

For example, Caliber Home Loans offers the 203k program and their own in-house version of it (I believe they just call it a Construction Loan) that essentially works the same way but there is much less red tape.

Most contractors don't like to do them because of all of the paperwork and red tape.

Some of the drawbacks is that the really good deals are usually scooped up from the bigger players in town who have already done ample research into the properties or going against NY buyers who have the capital to overbid properties and price you out.

I just picked up a new $900 stainless LG dishwasher with a dent in the rear panel (that I already popped out) for $300 but my wife wouldn't let me get the NEW display model bright red front load Samsung washer they had out for $325.

Multifamily is definitely the way to go but you need to educate yourself on the space.Single family is a much slower way to scale and carries a lot of risk as one bad tenant or capital expense can wipe out the cashflow and put you in the red fast.Commercial and multifamily will typically require 30%-35% down depending on the lender and the property.

Problem I have is how do I get that money into the bank without raising red flags?

I don't have any property yet so can't say for certain, but I know @Andrew Fidler is a local player in property management and also an  investor.