Uploading multiple iPhoto libraries to new iCloud Photos
I've used iPhoto for 10 years, and have multiple iPhoto libraries in order to manage the size and performance within iPhoto.
I'd love to try out the new beta of Photos, and keep everything in the cloud - but I'm unsure if I'll be able to upload all of the libraries to iCloud. Currently, iCloud / photo stream will only sync and work with one library. I also read somewhere that once you make the switch, you cannot access iPhoto again.
I'm just wanting some assurances that I can get all 4-5 photo libaries uploaded with no issues. Thanks.
MacBook (13-inch Late 2009), OS X Yosemite (10.10.2)