The key to double dipping is to take the two benefits at different timesand not lose anything because the benefit you take last has risen thanks to its actuarial increase.
Unless you're fine with just seeing where the wind blows you -- and hey, we're all for spontaneous travel at times -- you'll lose a lot of time on the ground if you don't have at least an idea of the layout of your destination before you arrive.
How many times have you witnessed a company lose their preferred candidate over a trivial point of difference, and then have the company only proceed to compound their problem by settling for their second or even third choice?