I, too, am done with outdoor riding until we have some consistently warmish (above 40) temps.

Have you tried smartwool snowboarding socks? They are knee highs, very very warm from the tip of the toe to your knees. Last year, they became my holy grail of keeping my lower legs/feet warm.

I wear shorts, knee warmers, the snowboarding socks, and non-chamois tights over top when it's really cold. Brutally cold, you could wear leg warmers instead of or in addition to the knee warmers. TE has some good heavier tights for really cold days.

I wouldn't resort to jeans but that's just me. There are better insulating tights---like the PI AmFibs--than dealing with the bulk of jeans.