Did mine alone. Used a floor jack with block under rocker. Did one side at a time. Other common issues to deal with are the steering column, shifter linkage, and radiator/fan alignment, filler hoses, and shifter clearance at floor opening.
If you have everything planned for all issues, it can be done in half a day or less depending on available tools (air helps). If you still have original body mounts, have a saws-all with metal blades or some other means to cut them out. Read some of the posts on here for ideas. The old body mounts can be the toughest part of the job.
Good luck, its worth the time and effort.