J.M.
You really need to try many machines out to find the one that is right for you. I am 5ft 4in with a narrow stance, and the machine that is comfortable for me would be much different than for a person that is much taller with a wide stance. There are also machines that have a circular rotation, an oval rotation, etc. Getting the one that is comfortable for you makes the difference between a machine that you will use and enjoy, and a machine that will hold your laundry!
It is worth going to a place that sells elliptical machines and testing them out. Find one that is comfortable for you. Work out for a while. Go home. Tomorrow, make sure there are no strains anywhere. If you are still comfortable with that machine, go for it! Good luck!