Based on your focus, I would learn how to become 100% referral (client introduction) based immediately.
Wayne Cotton's system will cost you around $2,000 initially with a little money for consumables, assuming you follow his system to the letter.
That will help you find the right prospect and get in front of them. Having something profound to talk to them about after getting in front of them is another conversation.
A decent website that helps identify you and what you do is also helpful even if you don't use it for quotes and such. At a minimum the site may provide additional credibility.
Long story short, spending a grand a month on marketing is insane and unnecessary.