God this should be fun.
I would want to be on a good sized island, with enough resources to survive on, yet not enough so that the 1st generation becomes lazy and not eco-friendly. Our resources would be pooled in a communistic way to begin work on a self sustaining environment, capable of defending ourselves.
After we had some sort of infrastructure settled, the temporary counsel previously created to control project priority would be dissolved, and a new government would be established. Something I made up, called Par Populus, which in Latin means Equal People.
The countries name would be decided along with other national things; flags, anthems, and the such. Then, as life began flowing more smoothly, I would begin creating a larger foothold in the modern world, possible starting huge projects that would increase tourism and inevitable new citizens. Illegal immigration would be openly punishable by deportation, and only alcohol and marijuana would be legal yet taxed. We would embrace technology from around the world, and hopefully in the last few decades of my life make a mission into space.
I would lay down the ground work for a self-sustaining citizen oriented nation.