[zokiboy]

You covered most viable options. If I were you I would continue with #4 and give that feature of monthly subscription to generate steady stream of revenue. You seem to have a product/market fit so in this situation I would outsource someone for a help with marketing, it seems you have good SEO potential, you can find good companies/freelancers on Elance. If you can separate wheat from chaff you'll reasonable SEO service for about $500 a month - I'm currently paying European based company for SEO services that much - zenoseo. If you have more cash find someone to help you with PPC, like Google Adwords, run few cheap test campaigns and see if ROI is good, if good continue otherwise wait some time. Additional customers you get from marketing will give you more cash. Then hire a developer. If at that time you still need cash try to get an investment. The simplest way to start is with angels. See if there is local angel group or try AngelList - there are good guides how to pitch to an investor. Good luck!

[dnc01]

Thanks, I am currently working on the recurring revenue as my major priority. At the moment I certainly believe I must act on what will give me the revenue to help expand.

Thanks for the suggestion on AngelList. I assume you are talking about Angel.co - I just typed in angellist.com into my browser and it took me there. I will have a look around.