The 250 Yamaha's are geared a little lower, and don't rev as high as those verado's.
But depending on how you load the boat, the 17's you have may do well.
Some people run the Mirage Plus, or the SWS Yamaha props, but the Rev 4 doesn't give up any top end, and helps keep that bow down which you may have liked when you put them on the Verado's .
Since you have the 17's, you may as well give them a shot. Let me know if you need the hub kits to make them fit.
Are you the boat that we tested in Sarasota. You loaded the boat pretty heavy most of the time, and it was a fairly choppy day for testing.'
Here are the numbers for the boat I'm thinking about.
http://www.propgods.com/forum/default.aspx?g=posts&t=41If thats the boat, I think those 17's you have will probably be a pretty good set for the loads you run.