There are over 20 active CPAs here in these forum assisting RE investors with their tax planning and strategies across multiple States.

I am planning and preparing so I can purchase a 4-plex in a little over a year, just want to know if any of you have some YouTuber recommendations outside of BP. 

I'm looking for advice on whether if it's worth it to invest on a triplex with all 3 units delinquent for over a year and owe more that $30K to the current owner.

This is going to be a very tough scenario, I suggest you stop putting money into this deal until you get things sorted on the financing side.I would also be very careful with and sketical about any offers for 100% financing... it will not happen, they are lying 99.99999999999999% of the time.The only realistic way would be for you to find a private investor to come up with the down payment for the mortgage but a down payment will be needed.90% LTC is theoretically possible through a flip loan but in order to reach that level you would need to have a lot of completed projects under your belt over 2 years.20% is possible but with 25% you would have a lot more options.That is part of the issue with this transaction...The other issue is with HOW MANY loans you are seeking...This is not 1 loan because this is not 1 deal...You need 3 loans because you are doing 3 separate transactions at the same time with the same seller.Blanket loans do exist but they are not widely available.Each folio number is a separate deal...

One other question that your carpenter / building department / insurance company may flag relates to the spacing between balusters, which has decreased over the years.

I prefer that over direct mail, text message blasting or bandit signs.

Vendors are all hired over the phone. 

I can see clusters of rent prices, hover over the price and get a quick view of bed/bath/sq ft and exactly where the price changes are between neighborhoods.

The days of getting a cheap deal from a foreclosure are long over.

I got pre approval from https://www.loanguys.com and I am having a lawyer look over any additional documentation before I sign, but something in my gut is telling me to avoid them.