should I get eheim 2217? Confused...

Before you start with 2 in a 60 gallon, go back to the LFS since you made a big purchase there and ask the owner if you can have some established media, even if it dirty, in fact its better. At least 1 cup full of disposable floss or whatever they can spare.

Rinse the old media in the bag of free aquarium water they also give you and install it into your new filter and pre-treated tank water. Then add 2 molly and monitor the water every 2 days, after about a week add the 2 more, then on the third week if perimeters are still free of ammonia and Nitrite, add the rest. I have gone slow like this and never lost a fish.
 
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