Go for the max...
TomH,Go ahead and get the 8 hp. In a year, you'll be glad you did. The Johnson 8hp two-stroke weighs about 55 lb. I used one very hard for about 10 years and had very little trouble with it that wasn't self-inflicted. OMC is now owned by Bombardie and I don't know who makes the motor now.My current O/B is a Yamaha and it's fine, too. I tried a 15 hp Mercury 4-stroke, (also a Yamaha, but painted black instead of grey), and had nothing but trouble with the motor and the worst experience of my boating life with both Mercury Marine and Apex Inflatables of Annapolis, MD. I sold the motor after less than a year and was happy to only lose $700 on the deal. Regardless of what the brochures, salesmen and other poor souls say, please consider the 2-stroke first.Fair winds,SteveS/V Aurelia