You can upgrade your services anytime.
Downgrades are possible but since these typically involve disk storage conversions they are difficult to be done or even impossible. Contact us about this and we might be able to help you. If however you want to keep your options open, start with a smaller plan (which for example has 80GB of space), upgrade your plan to whatever you want but KEEP your disk at 80GB, do not expand it. If later on you want to downgrade, you can easily do so since you won't have to resize your disk.
