If you don't plan to back-sweeten it, then given that amount of time you may be fine without adding sorbate. But you need to add the proper level of sulfites to protect it from oxidation and spoilage. Though if there is any chance of residual sugar, you should add sorbate just to be safe or you risk refermentation when the weather warms. I've had a wine I thought was dry and put through a 0.45um filter manage to referment the following summer.
I only bottle dry reds that have been in the barrels for a year without sorbate.
Note, the pad filters will not remove ALL of the yeast, just most of it. A 1-um filter is good enough to remove nearly all (99%) of the yeast. However you can't assume it is free from yeast. The only way to be reasonably sure is to put it through a membrane filter of 0.45um. Even these are guarantee only 99.999% blockage of particles .45um and larger. Plus, there is risk of re-introducing yeast later with non-thoroughly cleaned hosing/equipment. By adding sorbate and putting my sweet wines through the membrane filter on the way to the bottler, I've managed to prevent refermentation issues.