Hi, and welcome to the forum!!
If the pool water is clear, clean, and you're maintaining at least 4-6 ppm of chlorine in it at all times, then you're probably okay to wait til Friday to do anything else, chemically, except to get your pH down into the 7.0-7.8 range. If it's green, then you really need to shock it, but we can't tell you how high to raise the chlorine without a CYA level.
I see that the pH is high, and you can use either dry acid or muriatic acid (which you'll use a lot of, anyway, since you have a SWCG) to lower it below 8.0, just don't go below 7.0. As for your alk, you don't list a reading, so can't really advise you on that. YOur best bet is to go ahead and keep the chlorine in it, lower the pH, then wait until your Taylor kit comes to adjust anything else.
I like Zeosand, that's what I use in my IG pool filter. You cannot use DE in place of sand or zeo in a sand filter. If using sand, you can use a handful of DE to help filter finer particles, but my understanding is that you can't use DE with zeo at all.
Janet
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