Hi AllyJane
I completely understand about there being too many holidays to chose from. I always find that I have the next couple of years planned and then JY Will goes and throws a spanner in the works by introducing fabulous new trips (it happened with Hawaii and Namibia and now has happened with the hinted at trips to Guatemala and Alaska). I sometimes think I'm never going to get to see Mount Rushmore.....!
One thing to consider is when you want to go as some of the trips only go a couple of times during the year. Then have a look at the climate for each destination to see when its best to go. You could also look to see what holidays already have chat on this forum about them as it always helps to touch base with fellow travellers to ease those pre-holiday nerves. Other than that, just put the countries into a hat a go with whatever comes out first. I started doing these trips at age 30 and thirteen years later have done 22 holidays with 3 more booked this year. The world is a big place just waiting for you to visit it.
As Bob suggests if you post your options we can offer our advice about them.
Best of luck
Sally
p.s. Bob - just four weeks to go now...........