I'm assuming you want to do this to avoid entirely redownloading them. If so, why use optic supports?
Buy an external HDD (1TB if you're impatient, 500GB if you're not).
It'll be faster than burning contents on multiple discs, it'll cost you much less if you find the right offer (and we're still in Black Friday's week sales on amazon...
http://www.amazon.com/gp/aw/d/B005J7YBRW/ref=mp_s_a_1_1?qid=1417073835&sr=1-1&pi=AC_SY200_QL40 ) and will potentially allow you to transfer 6+ full uncompressed games rather than 1 on multiple discs.
Once you're done, you can just wipe it clean and use it for something else, while a disc would just stay there waiting to be used...