Also costing more in utilities which I pay.

I have read about the BRRR strategy and I would like to utilize this approach if I can. 

Utilities are in, phase one of the roads, curbs, gutters and water retention has been completed as well.I have received approval from the municipality to build the project as duplexes that will optimize cash flow and raise the number of finished units to approximately 300.I owe 1.25M and need 1.05M to finish the roads, curbs, gutters, and water retention.The first lien(1.25M) is overdue and was intended only as a bridge.The finished value of the subdivision would be 3.4M -4.5M as finished lots, depending on the comparables the appraiser uses.I have also found a lender that will lend to take the first out, but his points are high, it's not hard to get very expensive in points on a loan size like this.I am outside the Phoenix and Tucson markets in a smaller but rapidly growing area.

While there are some strategies you can utilize to tap into your retirement accounts prior to retirement, you must plan for it very carefully.

You'll want to get all the real operating costs from the owner, including pest, lawn care, taxes, insurance (you can get your own quote), maintenance, utilities, management, etc. 

Purchased it for about $115,000 with about $5,000 of my cash. mortgage was about $850 a month plus utilities.

Question is  "can landlord recover damages and lost rents, utilities and advertising in addition to security forfeiture, or must security deposit be used first for lost rents and damages?"

All park utilities are new within the last 8 years.

I would build in a reserve fund for your cash, instead of 53k I would budget for 60k-70k at least in case you run over on rehab or during the 6 months of rehab you have utilities, property taxes, etc. 

@Stephen R.While co-investing alongside one's solo 401k is not prohibited if the TIC rules are followed, utilizing financing under a TIC transaction would run afoul with the prohibited transaction rules.