I agree with a few of the previous posts in terms of doing as much interior work as possible, simply because it is a fixed schedule. One thing that hasn't been addressed though is the profit margin between the two. I may be bidding wrong and need to come up on my interior stuff, but I can almost double my profit margin outside vs. inside on the right job ( not to say its every one because some interiors a high bid is a must). The way I see it the labor/risk involved in exteriors warrant a much higher profit margin, I mean really, who wants to be 35 feet off the ground scraping and covered in oil primer. The higher up I need to go, the higher the price goes.