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No - sandstorm can let you break (by making near 3hkos into 3hkos), often run on nidoking as it lets you get through zapdos or snorlax with 3 ice beams/eqs respectively. while toxic forces rest better, it can't copy the ability of sandstorm to push some attacks over the edge (because you don't...
no worries been there, yeah that should work (11 am mine, 3pm yours if i did my math correctly). if you are still tired from the week feel free to change the time to whenever on the weekend is best, i should be flexible