Cycling-Related Strength & Conditioning

... which is where a bit of time in the gym will assist. If you drop a load of weight, people instinctively percieve their power to weight ratio to be high.
In most instances, a drop in weight = a drop in power. Some resistance work will keep those fast twitch fibres in check.

This is essentially what I have no clue about-how much time in the gym and how much resistance will be effective without bulking up too much? I can lose weight pretty easy just through careful eating and light exercise but if I'm exercising a lot I bulk up easily too. Optimum weight for me is about 69kg-I'm about 74 just now (i think...) and 5'9'' so theoretically climbing should be much easier than for some 6' 14 stoner.