OP (new to RV) is asking for suggestion on how to short term full time in a 27 year old (i.e. 1994) used trailer that he has already purchased. He is in Gold River, British Columbia, Canada. Recent weather forecast indicates night time lows -11C (10F). My suggestion is get a motel room for Feb/March. If you want to maximize your RV experience (not to mention your impress your partner) keep your learning curve for warmer weather, hopefully RV dealers/parts dept. will be more accessible to help you with any repair needs. Trust me your girlfriend will appreciate it.