Freelance Web design Quote?

Ok, so I have this BIG project coming up (as soon as I have a quote/estimate)

It is for a non-profit organization, and they need me to do EVERYTHING! Build the site, design the layout, come up with the colors, RUN the website. EVERYTHING. They have no pictures, not idea on anything. As it was put "its my baby". They don't even have a logo (I’ll need to create) They want it 'high fashion' of websites. They also want a place to let people donate. I've determined it's going to be at least 10 to 15 pages.
It's almost overwhelming thinking of it all right now.

They don't have a domain name, url, host space. NOTHING.

What should I charge them?

I haven't done something so large before and I really have no idea.