For the amount of boiling water you need, you might find that you're better off with an isobutane/propane mix canister type stove. Normally the break-even point for weight between alcohol and canister stoves is at 7 days, but that's for one person boiling a pint once a day. Reference

The canister stove will allow you to boil all the water you need at once in one large pot.

I tried alcohol but decided that I far prefer the convenience of the canister stoves, even just boiling water for myself.
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May your trails be crooked, winding, lonesome, dangerous, leading to the most amazing view--E. Abbey