Yes, you can cut them. When you are ready to put everything back together, you probably don't want to splice the coaxial cables
, but instead install connectors and use couplers to reconnect the ends. This way you can more easily work on the system in the future.
You want to really inspect the cables before reusing them. If they have been exposed to sun or salt water
they may be corroded and you would be better off replacing them. In any case, it's not a bad idea to have connectors and service-loops to make future work easier.