Mixing things up will help you out immensely. If you don't want to visit a club (I hate them) you can accomplish plenty with riding and a bit of cross training. You may also find that calorie counting will help beat the weight plateau.
Like the others said rest days are important whether they are all out rest or active recovery. Your body can't adapt if you do not give it a chance to repair.
Go hard on your hard days and very slow on the rest days. Things will improve much quicker when you aren't stuck in no mans land.
Also, every 4th week I take a rest week. Meaning that all my exercises are low intensity and my strength training is done at half.
When I stop waking up every morning with my legs throbbing I know my recovery has been a success.
Here is a typical week for me as an example. It varies as events come and go.

sun: Moderate length ride,stretching, and a long run
mon: Recovery ride, stretching, and strength training
tue: interval ride and stretching
wed: no ride, short run, strength training, and stretching
thurs: tempo ride and stretching.
fri: whatever sort of ride I feel like, short run, stretching, and strength training.
sat: Long ride and stretching.

I have to put down stretching otherwise I forget it and I am trying to heal an injury.