Given your urban environment, reduce the amount of water you carry, and invest in a good water filter. Don't bother with a purifier which protects against virus, they are not a problem in CONUS. The problem in urban areas is not that there is no water, but that the water is contaminated. A Sweetwater (my choice) will do about 25 gallons before the filter needs to be replaced.
Iodine tablets are counter-indicated for those with high blood pressure. If you must, use the clorine liquids found at camping stores. Look in the same place for a filter.
Otherwise, looks like you have a good plan.
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Sleuth
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