finding a good location

I would think geothermal activity would be something not to get too close to, given the potential for the planet wiping out the colony on short notice if it's having a bad day. And since we're talking about a young planet, geologically speaking, there's bound to be a fair amount of volcanic activity and even tectonic shifting. That's why I figure there's just one Pangaea type of continent.

I agree the minerals and ores would be important, which means of course that we would need some sort of prefab equipment for boring and for processing what we find. Again, such a camp probably should be located a safe distance from the colony because of the nature of the work.

If the materials are readily enough available, I would suggest building a number of habitats, so that ecosystems of savannah, tropical and other life can be established early on. That would be a structural engineering feat, though, since we would need a lot of space to get the ecosystem established properly, something close to a thousand square miles per ecosystem.

And no concrete bases, either. They found at Biosphere 2 that concrete takes decades to cure, and in a closed system it gradually causes the air to go anoxic. Perhaps we would grind the top 10 feet of soil into small rocks and rock dust -- more prefab equipment -- and secure the supports into the rock beneath somehow, then dome the entire enclosure. Probably should do the rock grinding anyway, just so we can start creating alien soil.

And of course that means we'll need compost or some earthly soil to help establish the soil on our alien world, which will be bereft of life. So we'll need to pack a ton of that -- several tons, actually. Maybe a cubic mile? That should allow us to create an inch or two of top soil over a lot of surface area, and two to three inches of top soil in our farming areas.

If concrete becomes necessary for the bases, we'll need a way to correct the oxygen problem, since the plants won't be able to support the ecosystem and cure the concrete at the same time. Maybe we could supply each ecosystem with a mechanical air converter, or with a supply of liquid oxygen that can be released when levels in the air start to get too low.

I think it really would be necessary to do more than wait for the algae to convert the atmosphere for us.