Adobe Creative Cloud would obviously need storage so that it can work properly. You can always boost it by paying a little bit of extra every month. The moment that you choose a subscription plan, you will automatically get 100GB cloud storage. This may seem like a lot, but you may use it all up, depending on the projects that you are doing.
You will also need more space if the Adobe Creative Cloud plan that you have gotten is meant for your whole team. Take note that 100GB cloud storage will be enough to store 20,000 JPEG images. It will depend on you whether you think you need this much or not.