IF you can see the bottom of the pool (deep end), it is safe to swim up to SLAM level FC. If you can't see the bottom, it is a safety hazard.
The more often that you can test and add Chlorine the faster it will go. Every hour is not too much. I don't want to scare you, but you should be prepared. I had a green pool and it is similar in size your your pool. Took me about 35 Gallons to clear the pool. Haven't had to SLAM since. You might want to start with 20 gallons, you can always take it back. When checking out the cashier looked at me and said, "I'm not going to ask..." I actually explained it and she said, "oh, that makes sense."
Was looking back at some of Jack's posts and pictures! You have a very nice pool! I would recommend that you remove the ladder and scrub inside the tubes.
Also, Scrub, Scrub, Scrub as often as you can the entire pool. Do you have lights? Can you post some pictures of the lights? Depending on the type of lights, you might have to remove them and scrub behind them. Scrubbing breaks down the biofilm on any algae in the pool and allows the chlorine to kill it.
Go Get 'Em!!! You got this!!