In reply to AndrewW:
It depends what your ultimate motivation is really. I can understand wanting to make the most of all (outdoor) climbing days, and fit training in around that. This is hard to do (but definitely possible!), and probably won't let you make the quickest gains.
If you want to improve as quickly as possible, you could benefit from periodisation. That is, draw a line between the periods of time when you are 'training' and those when you are 'performing'. Different training periods should focus on different areas (e.g. strength, endurance), while just maintaining a level on the others.
That's not to say no 'actual climbing days' during a training period; just adjust your expectations. Use that time to work moves on your project, or visit a new area and onsight a load of routes below your redpoint grade, or do some bouldering... Then, at the end of the training period, take a light week before starting a 'performance phase' where you go all out on your hard repdoints.
I'm just starting to attempt the periodisation approach, I'll see if it pays off when (if) the weather improves and I can get out again.