As a LTW, you can spiritbond it yourself actually...

Some of the high-end gathering accessories can be crafted with a LTW. What I would suggest is making the following:
- Raptorskin Choker
- Raptorskin Ring x2
- Raptorskin Wristbands of Gathering

The last part you are missing from a high level Gatherer's set would be Electrum Earrings, which requires a GSM to craft.

Meld a materia into them - just one of the cheapest Tier 1 materias on your server. If the items are HQ, the spiritbonding rate increases by +20%, and having a materia increases it by another 20% (not sure if additive or multiplicative). Then just go for a few DR high runs, and spiritbond them. I'd suggest playing a tank, since you can choose to take things slow, and control the pace of the dungeon. Or a healer, a loss of 150 per Cure isn't gamebreaking in something like Copperbell HM. You should switch out to your normal gear for boss fights though, but feel free to equip the above accessories for fighting trash mobs.

I just did the LTW 50 quest 2 days ago. Gatherer's Grasp 3 were about 11k each on my server too.