Hi Andy
Depends what your after really. This motor sounds like it is likely to be reliable and sounds well priced, however, i wouldn't have said it was a geat match for your boat.
I would have thought it would be underpowered with only 150 gg's and the boat will be hard to set up so it handles well with a 25". (im sure you could get a 20" mid for the price of a decent jack plate)
I had a 25" on my R21 and it handled like a pig
I would be looking for a 200 (+) 20" is i were in your shoes.
Plenty of well priced xr2 200's knocking about for at least a grand less than that and probably a few 2.5's too. Im sure you could even sniff out a 3.0 for the sort of money that you are looking to spend.