The number of clips isn't important, it's the overall total space usage. A 128Gig card may hold one full day of driving (you can do the math), which means (at least) once a day you need to offload all the card storage to some other drive (card swap, WiFi) which is going to have a fairly massive amount of available space (at least 128Gig times the number of days of the trip).
You can use one of the posted scripts or apps to stitch the small files together, and some may even allow lowered resolution to reduce space requirements. Hopefully a task you could perform on a reasonably-powered notebook overnight. The downside is that BV's own Viewer will no longer accept these stitched-together files (unless something's changed in a very recent version).