The easiest thing to do is prune(.) You won't be contributing to the network as much since you will no longer be able to seed new nodes, but it depends on what you want to run your own node for.
Thanks for letting me know of that function. However I don't believe I'll be using it, as the whole point of running a node is to simply contribute a bit. If it gets considerably larger I'll either upgrade the size of the disk or just stop running it & delete the blocks.