I've heard flipping might be a good place to start, but would love to hear about people's opinions and experiences in these types of markets.

They know what people generally look for when vetting a lender.  

I know people hate POH's..

Haven't seen the other two come to fruition...or if they have, I haven't found out.Demand might be really high right now, but it would likely be dominated by people trying to find someone to pay the full contributed capital for worthless positions in failed deals. 

I need it to work as a quadplex so moving forward, I would appreciate not getting warning posts about zoning.Should I rent it as 2 units and put people on the same lease but keep their residences separate with a door that can just stay locked or something?

I agree, although in my experience most often when people hear that "P" word they draw back and.... ruminate on "loosing" a % of there company, investment, cash-flow or profits. 

Currently they have average finishings for the area.I have an idea on the rents but would like to hear what other people are currently renting their units for.

In fact I know a few people who have had good experiences with Crexi.

Once in there you will find plenty of people that are doing it, although the ones that will connect with you will most likely be begginers that don't know too much. 

Well besides the hard costs (construction, materials) and soft costs (permitting, architecture, fees, engineering) people often forget holding costs.