If your targeting a payment of $2300 that means that you need to make at least $4,600 per month gross or $55,200 annual gross.

It's a one-time transaction, and you'll have FIXED monthly payments and rate will typically be lower compared to HELOC.  

I could just sell it and do a 1031 to avoid capital gainsBut it is not so simple to just "sell it" I have a solid tenant and they are paying $3.6k/month, haven't missed a single payment and they are so sweet.

If i purchase this HOA/COA lien i am wondering what are my options when it comes to the mortgage. i know there are 4 options for sure1) Notify the lender of the situation and payoff the mortgage2) Don't do anything, rent it out and let it get foreclosed on3) Flip the property quickly as possible before it gets foreclosed on (the mortgage will get paid off)4) Sell the property as is at a slight discount to recent comps (the mortgage will get paid off)This is the one I'm not so sure about5) Notify the lender of the situation and let me continue making the payments on the mortgage for a long term rental playmy question is, is #5 doable?

Payment is just shy of $1500/month. 

I am currently looking at buying a new construction home as a long term rental property. sales price $214000. first my lender told me I can do 0 down. and I am really excited about this deal. but later he told me that am not qualified for 0 down because of my income. the other option is that I can do fha with 3.5% down, 6.125% interest rate. cash to close is $14000. my monthly payment is around $1575-$1590.it can at least rent for $1700 as a long term rental property.

This is true for rent payments as well as any payment for service or merchandise.

I own a hard money business and we never ask for payments prior to closing on the loan.

I am unsure if they are a good investment, but I am leaning towards yes, I don't have anyone around me to ask so I decided to come here.House 1. rents for $825/m the loan will cost me $13,000 as a down payment and $6,000 closing costs, and should cash flow approx $275/m after mortgage payment are made.House 2. rents for $600/m the loan will cost me $13,000 as a down payment and $6,000 closing costs, and should cash flow approx $50/m after mortgage payment are made. 

From the looks of your investments, you have made bad choices or overestimated the metrics so the issue is on the buy side, not the rent or sell side.You are off to a good start in acquiring, but you haven't met your own expectations on either deal which either means you are trusting the wrong people or overestimating your abilities this early.