Unfortunately, a lot of nonsense persists in the cycling community about weight training. Take a look at this:
http://www.sportsci.org/news/traingain/resistance.html

If you look at studies of weight training, you'll find that cycling performance only improves with weight training among the untrained. And among those, cycling performance improves more when cycling is substituted for the time spent weight training.

Lift before you ride if you want your lifting performance to improve. I can ride the legs off every gym rat in the place, and I'm 65. But if you want your cycling performance to improve, ride. I've been doing this a long time. My experience is that my lifting regimen improves my sprint, especially after 100k or more riding. I don't think it has much effect on my climbing or my TT. No other program had any effect at all, and I've tried them all, dating back to the 70's.

There are only two disciplines in recreational cycling: climbing and sprint. TT is unimportant because of drafting. If you want to improve your climbing, nothing really works except intervals and OLP. High rep weights do improve the sprint. Low weight reps do nothing. See:
http://www.sportsci.org/jour/04/cdp.doc