the cold winter months are great for weight training. Take stairs whenever possible. Do step ups. Find a step stool or stairs to walk up and down. You can also try a fast pace up and down stairs - thats a good cardio and will develop those legs. The only thing you will be missing is just miles in the saddle. So the days you are home, get on a trainer or spin cycle and spend some time in the saddle for endurance. Good luck on the new job. I hope you enjoy it!