25 -> 45 might be a bit too much. You'll have to find and fix the source of your injuries before making that jump if you're injury prone. I don't know your specific case, but you might have to do some form of strenght training DAILY, combined with some form flexibility (AIF for example). Also keep in mind what you do the other 22 hours a day have an impact on you as runner.
In my experience tendons/bones/ligaments/etc. take +/- 4-6 weeks to adapt to a new stress level. Back in the days I increased my mileage a solid 10mi/year.
It kind of happened with a 5mi jump every six months. If you want quick results, go find yourself another sport. Every time I tried to increase my mileage faster, I got hurt...
Maybe it might be better to shoot for a time based goal, like five days a week 60 min runs, a long run of 90-95min and a rest day (total rest) It all depends on your specific goals, or lack thereof.
Don't forget to add some RELAXED tempo's/ RELAXED fartleks add the end of the summer & keep in mind you have to do RELAXED strides almost daily.
'Train relaxed, run fast' ;)