Looking For A Plan

Is that 2x45min run per week and 30miles of biking total per week?  Whats your longest bike session per week?

Also, what distance are you aiming to race in early summer?

A few simple things that come to mind is if you just want to use the 16 or 20 week plans thats just time/based (free) on the site, pick the one that will lead you up to race day, THEN from now to the beginning of where that plans starts, make a general plan to go up in volume (if needed) to start that plan by the start date - so your ready.  no more than 10% increase a week, have an easy week once a month. 

I don't have any specific 'winter training' programs.  Just the general 'minutes only' to serve as a template for further modification.

Also check out the silver/gold level 4-7 and 7-10 hour winter maintenance plans...and couple that with a sprint or oly race plan from the same section.  if your looking for specific workouts and better performance, that is an alternative too.