Nuke the moon! Right now the topography of the poles necessitates quite tall towers to get into perpetual sunlight; but a bunch of judiciously placed nukes could easily take away most of the shadow-bringers (crater rims) and reduce the tower height necessary to get up into perpetual light to a small fraction of what it would be now.

Just remember: nuke first, then colonize. So, sooner rather than later.