Age of construction may not be a huge issue if it has good bones and can benefit from a fairly cost efficient "In & Out" remodel.What is stopping you down payment?

You may want to seek out a smaller company if you don't like their business model.

As well as new construction in those areas is a fraction of what you have in other parts of the country so the older exiting houses are finally getting absorbed.

In running a business I would not take a chance on a small / unknown company. 

1 piece units are really for new construction.

Also, a buyer’s agent can assure a busy listing agent that you’re qualified and explain some of your situation.

Appreciate any advice or messages with help or constructive criticism.

Greetings,I am a recent Civil Engineering college graduate, and I am looking for advice on how to secure funding.The deal is located in FloridaI am currently in process of purchasing the Land for $18k free and clearI will be building an 1100 SQ/FT home construction cost will be around $130,000What are some ways I can secure funding as a 21-year-old inspiring developer? 

However for business development or scaling your business to the next level, these courses might offer some help.

My thoughts are to either consider it as a wholly separate business, using my (future) agent license to get to know the market, generate leads, etc.