Sorry, but I forgot to convert to hp in all cases!!

I roughly want .3hp so i was thinking, to be on the safe side, to have an engine that outputted .6hp. This should cover me as regards the operating comfort zone. Anything above this would just be a waste, I think!

The reason I went for OS is that I read reviews of their engines and most were positive. Also I read the results of the recent thread on the best engine manufacturer and OS seemed to lead the way. Is this assumption a good one or should I look into it more thoroughly? I really need to make up my mind on an engine in the next day or 2 in order to keep with the project schedule.