Thanks for the many outstanding suggestions! Looks like Festool products can easily become habit-forming and an addiction requiring a second (and third!) job.
My current thoughts are to get the newly-introduced RO 150 FEQ dual-mode sander and an ETS 150/3 EQ model. A Festool factory rep (at the Atlanta IWF show in August) felt the dual mode RO 150 was great for coarse and intermediate sanding, but to get both intermediate and fine sanding results consider going with both the ETS 150/3 and ETS 150/5 sanders (I'm told the number 3 and 5 in the model name indicates the sanding stroke size - 3mm or 5mm). Going with the RO 150 FEQ and ETS 150/3 would give me the capability to do coarse and intermediate (by using the RO 150) and fine sanding operations (with the ETS 150/s). Then, maybe in time, get the DS 400 EQ for getting into the hard-to-reach spots. I had thought about getting only the ETS 150/3 and ETS 150/5 units to handle fine and intermediate sanding, but that would mean I wouldn't have a machine to do the real heavy sanding.
I will add the CT22 dust extractor and the 1400 router to the order as well. Anyone have any suggestions about where best to purchase the machines? Festool.com, McFeely's, Woodcraft, ???
Treasure Island FL