Jim:
If you are going away for a little over one week, the SLAM levels may not work. The pool will loose a % daily and not your normal daily amount. Your pool is quite large, so probability is you have a safety cover, which is quite large. If you have a regular tarp, you can bring up to SLAM levels and cover the pool. But please make sure that the gates are all locked and no one can get back there. This will definitely work. My pool is going to be down for 2 days when the heater is installed so I plan on cover the pool (all depends on the weather).
Outside of this, you can bring up to SLAM levels and have a neighbor maybe add a few more gallons in between your vacation. Personally, I would fill up 2 - 5 gallon buckets with bleach and water, place a lid and put in the shade. Then your neighbor can add the buckets without splashing themselves. Outside of this, if you come back to a cloudy pool, clearly you can clean up in a few days. The tablets will only lower your PH and increase your CYA, depending on where your level is.