I am planning to construct an ADU on a lot that I co-own outright, and originally intended to apply a condo regime to it.

Can you as a small, starting-out developer, partner up with an architect firm, construction firm, and the rest of people needed to make a project?

I'm thinking - if it can happen with new construction, why not with a flip

On the business, management, and construction side I would give myself an A or a B.

I am almost positive that my dti is too high for typical construction financing without paying off the two personal loans so I am just looking for any options that anyone on Bigger Pockets might know of.

However, it is a very deep lot in an area where houses are being torn down to make way for custom home construction for $1.5-2.5 million dollar homes.

@Eric Burch Hey Eric :) Do you sell certain properties in order to fund future construction, and if so, at what point?

It's important to figure out what your business strategy is, and what your value-add proposition is.I know that folks have been successful in each one of these niches in Philly real estate, just depends on what you are looking to do (in no particular order and just off the top of my head, I'm sure that I'm leaving a bunch out): low-income rentals, luxury rentals, flips, vacant land speculation, new construction, section 8/PHA rentals, wholesaling, wholetailing, bird dogging, turn key sales, property management, construction management, financing expert, zoning expert, title expert, business procedure consulting, hard money lending, seller financing, buying subject-to, syndicating deals, 1031 exchange scout, retail sales, etc.Personally, I've set up a pretty decent rental portfolio over the last few years, that's what made sense for my investing goals and setup. 

Mine was construction.

Most "traditional" Chicago 2-4 flats are constructed with the units vertically.