Storing applications on original SSD on Macbook Air mid 2011

I have recently replaced my original 64 GB Mac SSD with a new 240 GB SSD. The original drive can now be used as additional storage. I think this is a great feature. I wonder if I can move my iTunes and iPhoto and all associated files to the attached Drive.

Should I do it? Will there be any problems accessing the photos and music as long the original SSD is attached as USB?

Any help would be greatly appreciated.