The listing went live but then within 24 hours (unknown to anyone) the listing was automatically removed due to incomplete info relating to the number of bedrooms and bathroom.This allowed the apartment to be vacant for nearly 3 months.

I removed a bedroom and added a bathroom to create a 3/2.

I'm asking because I don't want to have the agent think I'm wasting their time with no funding or pre-approval. 

If you sell the house, you're removing the reason you have this momentum. 

They are not appearing in my organic motivated sellers from my #1 ranking website.Lists are garbage, and anyone still spending money on marketing on anything that has to do with a list is WASTING money!

Then you have some kind of 3rd party documentation to prove it needed to go and you were removing it for safety reasons.If you move a mobile to it, chances are you need to install septic.....so that's $10,000 probably.   

Back due rent just means that the previous owner may not have been very forceful with deadlines and/or removing bad eggs.

The main items ypu want to focus on now when running your calculator is the debt service (mortgage), taxes, insurance, maintenance, Capex (if property is in excellent shape and doesnt need any major improvements then this figure does not need to be quite 10%), vacancy (talk to PM), landlord required utilities (if any), lawn care snow removal (if applicable).

While a 10% down payment will most likely reduce your mortgage insurance coverage requirement, a 10% down payment will not remove your mortgage insurance.

Am I better off just pulling the trigger and getting into the market instead of wasting time continuing to rent to find the perfect deal that may never come along?