I think you should go for it now. Your numbers are good to go. Bring the FC up to slam level and keep at it. Nothing else for you to do at this point. Don't forget to run your pump 24/7 throughout the slam process. The more you keep the FC at slam level the faster you'll move to the finish line. Don't forget to monitor the filter pressure gauge and backwash with a 25% rise from clean pressure reading.
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