Don't Bite Off More Than You Can Chew
I once spent all summer developing a destination website with around 200 pages.
The biggest risk about taking on a big project is that if your idea isn't great, you can waste an incredible amount of time and effort on something that doesn't take off.
In this case, I had accidently set up my website to directly compete with the big boys in town, including all the hotel booking engines. My website's keywords were super competitive, and my content wasn't original or opinionated. There were dozens of professional websites doing a better job of what I had tried to do.
These days, when I develop a new website I have a strict criteria of having the website up and running with around 20-30 pages max. This involves starting off with a super-targeted niche, but I also try and allow myself clear avenues for growth if I hit on a great idea (good ideas aren't good enough, they need to be great).
So start small, get yourself up and running within a week or two and then look to expand from there.
Has anyone else bitten off more than they can chew? Maybe you gave up on it in time once you realised the monstrosity you were trying to create, unlike stubborn old me! :)
All the best,