A bike question - IM Lake Placid

Here's the deal. I'll be on a family camping trip near Lake Placid and was thinking about taking the bike and riding the Iron Man loop. More than likely I'd cut off some of the mileage, but still be riding in the 40-45 mile range. My long rides now are in the 20-30 mile range. I was wondering, especially from those that have ridden it, if I was taking too much of a jump at this point in my training? Training logs are up to date if you want to review those before posting an opinion.

I also have the option of taking a lunch break about half way through since the family will be in and around the area, most likely shopping around Lake placid, but I could start at the half way point, ride into Placid and have lunch and them have them pick up me on the way back to the campground.

Thanks for any advice.

Chris.