Actually, the chlorine won't hurt you at that level, but you will want to wear old suits that you don't mind being faded. And you probably don't want it in your eyes so goggles are a good idea.
If the level holds at 25 overnight for a couple of nights, I'd say you're good to go. But with the CYA at 100, you'll need to keep the level between 8 and 15 even while swimming. If it goes down to the 60-90 range, chlorine should be kept between 5 and 10.

Algae is VERY resistant to chlorine when it's attached or embedded in the walls and crevices of the pool. Brushing it out was a VERY good thing! And you should plan to do it regularly, like weekly, to control it.

Hope this helps.