What bike would you recommend for a century?

[Fredwina]

Fredwina, I've put in 20 miles or so in one sitting so I am still breaking in the bike so to speak--and me. I am considering a century in October if I think I'm up to it.

I would try and work my mileage up to where you can do a metric(62 miles) w/o difficulties. Your avg speed sounds good.