Affiliate Projects that are too big to handle

I have never had a problem coming up with new ideas or identifying niches, a majority of the time I document those ideas and work them through to find out their viability. The ones that the research suggests could be successful go through to the next stage of developing that idea.

Most of the time these are fairly simple projects, some larger than others but all well within a few days or weeks worth of work, however sometimes you hit on an idea, for which all signs are positive, the research is good, there defiantly seems to be a market and you have worked thoroughly through the idea on paper and area ready to go-ahead with that project but when it comes to the crunch it starts to look like a daunting proposition.

I am currently in that position, I have a great idea which I have been working on for some time now doing research and paper design, I have even done some prototyping but now that the time has come to actually develop the site related to the project it seems a whole different kettle of fish, don’t get me wrong it is still a viable idea and I am sure it would be worth the amount of work it will take to get it off the ground, however it is still a daunting prospect.

The way I see it I have four options:

1. Scrap the idea
2. Outsource the work
3. Find a Partner for the project
4. Try and split the project down into more manageable chunks.

The first option is out of the question, it is too good an idea to throw on the scrap heap, the second is also unfortunately out for the question as this would take significant cost, s I am left with either finding a willing and capable partner for the project or trying to start the idea small and grow it over time.

Anyone else been in this situation? any advice?