FIRST check with Adobe to find out if you may cancel what you have without a fee
Adobe contact information - http://helpx.adobe.com/contact.html
-Select your product and what you need help with
-Click on the blue box "Still need help? Contact us"
Then cancel what you have
-cancel http://helpx.adobe.com/x-productkb/policy-pricing/return-cancel-or-change-order.html
-or http://helpx.adobe.com/x-productkb/policy-pricing/cancel-membership-subscription.html
-or by telephone http://helpx.adobe.com/x-productkb/global/phone-support-orders.html
And finally buy a new subscription
Cloud Plans https://creative.adobe.com/plans
-Special Photography Plan includes Photoshop & Lightroom & Bridge & Mobile Lightroom
-Special Photography Plan includes 2Gig of Cloud storage (not the 20Gig of the full plan)