Definitely pay for a pro. Your floors are one of the most important features of your house.. A good floor sand and finish can add more value than you can possibly save by trying to do it yourself. I have had it done at three houses in the last 10 years, and it is not that expensive.
PROHi Angela,
Definitely call in a Pro. Floor sanding is not that expensive. They will do it in a fraction of the time using commercial floor sanding equipment, not the dinky toy hire variety for the DIY market. If there are any damaged boards that need replacing or staining to match new replacement boards to old, could you do it, and do it well? Save your sanity by getting a professional to do it. Save money by doing any painting that is required. Once you start sanding you could find you have had borer in your floor and floor boards need replacing. Take a look at this horror job that we had to tackle. I think you will agree it is best left to a PRO.
http://budgetfloorsanding.com.au/floor-sanding-and-polishing/timber-floor-board-repairs/
bigreader