preferred sail cloth weight?`

Hey all:
Yes, me again. I see that I have posted an astounding number of times since joining this group. But in retrospect I also see that I have tried to be concise in my questions and offered up witty repartee as well as offered advice when it's fallen in the scope of what I know.
Sail question:
I'm having Don Yager make up a new main for me. Reasonable price, and he's local so I got to discuss things with him personally, which I always like to do with large purchases. He is suggesting 5 oz. cloth for longevity, based on my recreational use of the boat. Looking at the technical specs page, I see that a cloth NO LIGHTER than 3.5 oz. is called for, so I'm okay as far asnot having it be too light - but is 5 oz. considered way too heavy for racing, and virtually anyone who might be a potential future buyer of my boat as a racer (should I ever sell, doesn't look like it) simply scoff at the idea of 5 0z. sailcloth?
Thanks in advance,
Carlos
Yes, me again. I see that I have posted an astounding number of times since joining this group. But in retrospect I also see that I have tried to be concise in my questions and offered up witty repartee as well as offered advice when it's fallen in the scope of what I know.
Sail question:
I'm having Don Yager make up a new main for me. Reasonable price, and he's local so I got to discuss things with him personally, which I always like to do with large purchases. He is suggesting 5 oz. cloth for longevity, based on my recreational use of the boat. Looking at the technical specs page, I see that a cloth NO LIGHTER than 3.5 oz. is called for, so I'm okay as far asnot having it be too light - but is 5 oz. considered way too heavy for racing, and virtually anyone who might be a potential future buyer of my boat as a racer (should I ever sell, doesn't look like it) simply scoff at the idea of 5 0z. sailcloth?
Thanks in advance,
Carlos