Hugh, get yourself some pH strips and check to make sure you stay acidic, that will allow you to keep it longer in the jar. If you go lower than 4.5, you should not keep it longer than a month. It will peak at a month no matter what, longer than that it just stays stable.
I'm feeling bearish, and I'm packing a Wusthof Grand Brisket slicer from MABA
"perhaps...but then again...maybe not..."