I Have Hashimotos And Had A Partial Thyroidectomy In 2011.

I have Hashimotos and had a partial Thyroidectomy in 2011. I still have positive antibodies of course. After four years I am finally no longer consistently hypothyroid. But my levels are very variable from month to month which had been quite a roller coaster.
My question is whether having the rat if my thyroid out us advises me now/.
1. If I have it fully removed, will my antibodies go down or disappear?
2. If I take it out does it reduce my future cancer risk?
3. If I take it out will it make it easier to manage levels to a steady state without the thyroid producing variable amounts of hormone.