No, you can't have "all of my files with me, all the time", especially not if you own and use a camera that shoots video.
You also never want you primary storage on a portable device that can be lost or stolen.
To solve this problem I bought a Synology NAS and now all my files are accessible on all my devices and the NAS is continuously backed up to a couple different places. But you can have the same effect just by using iCloud.
As soon as you have two devices, say a Mac and an iPad you need a way to synchronise the data so that the same exact files are on both and if you man a change on the Mc, it shows on there iPad. Again iCloud does this or if you have lots of data you can DIY by buying your own cloud.
What you need on the MacBook is the set of files you are using and the big archive needs to be in a safer place