I did a recent flip with much warmer colors, actually used SW Creamy on the walls, and the house sold in 5 days. 

Many lenders, even small ones, don't offer HELOCs on rental properties like yours.

Every PM operates differently, and at the end of the day, there is tons of information you can navigate on your own in the beginning stages online, but surely there will be PM's that would be more than happy to assist you on journey. 

If all of them have a garage and yours does not that will either put you at a lower ARV then what you thought, or a longer time on market.

Just shop around online, look for properties similar to yours, add them to favorites and watch them to see how long it takes for them to rent.

I’ve been a serial house hacker in the greater Boston area so happy to connect and share some lessons learned.Multifams inventories are quite low depending on your budget and location preferences.  

Some lenders work with 220+ lenders and can really understand which lenders are best for you based on your situation. 

Those agents are recommended because they paid to be first on the list.

Any luck on if this company is legit, looking to use them for funding too.

There will likely be a partnership return required where you flipped a house with a partner and lost $120,000.If you sold the other property within the same partnership, it will also be reported on that partnership return.The net result to you is that you will receive a K-1 showing your income / loss which you then use to report on your individual return.If you made no money within the same year, you likely pay no additional taxes / get no additional refund.Best of luck.