So, I spent about 3 hours last night running different world gen parameters until I came up a map that I really like. It has a cave, magma pipe, chasm, river, lots of trees, a buttload of obsidian and marble and so far I have found hematite (right next to embark location), native copper and aluminum ores. There is also this really cool inlet right where the river ends that is surrounded by cliffs. I am thinking it would make a great statue garden.
There is only one problem, all these features with the exception of the chasm and magma pipe are very far away from each other. I embarked on a plateua, right next to the top of the magma pipe. If I carve out the fortress here, then I will be close to the trees, magma pipe and chasm. However the river is in the far northeast corner I think about 12 z-levels below where I am currently.
The Cave is in the South east and is about 5 z-levels below where I currently am.
I am thinking of carving out the fortress here where I am now, then I can benefit from the chasm, magma pipe and have plenty of tree's. There is water (via murky pools) near me here so I can build a well on one of those for now. Then after things get going I was thinking of digging down all those z-levels to the river and bringing some of that water back up here. Eventually I would like to punch a hole in the cave and invade that. Not sure if the residents will be friendly or not but they have alot of trash lying around that I would like to steal...er...claim

Any other ideas? I have the World gen params and seed if anyone wants to actually see the spot. You have to go 7x7 to fit the river and cave in. You could do a 6x6 and leave out the cave as well I guess.