With that attitude it is.
Seriously, I think the harder thing would be the terraforming. The building of the colony based on what we know about how the future works with replication and all that (and I do agree with
@eschaton that it is an issue that is inherent in Star Trek) really can't be all that difficult provided a little manpower. I feel as though on more than one occasion we had the Enterprise going to go and colonize a planet. And next week, they were off with Worf doing something having to do with Klingon honor.

So, it can't be
that hard.