Best way to extend ceiling Ethernet drop down to server-rack on ground?

Previously, we had a 6RU comms cabinet near the ceiling.

We've now replaced this with a full-depth server rack sitting on the ground.

The plan was to remove the old patch panel, and punch it down into a new patch panel in the server rack.

However, it turns out the old cabling didn't have any service loops - so it's basically already stretched taut, and not long enough to reach the ground (approximately 2m too short).

What are our options here?

1. Use some kind of inline RJ-45 coupler. This will also require crimping 8P8C modular plugs onto the end of the cable.
2. Punch down a CAT6 keystone jack onto the end of each cable (48 or so), then run a patch-lead down to the server-rack.
3. Mount a small wall-frame on the wall, leave the old patch panels in place, and run patch leads
4. Re-running all the cabling.

Are there any other good options here, or what is the least bad of the above?