Really very good details my friend - The idea with the tap and the bucket is very good and a really nice detail.
I understood you in this way, that only one barrel will get a tap.....
Your model is getting step by step to a real very GOOD model
For the final arrangement:
I hope the barrel and the firewood is not fixed and only temporary arranged to show the detail, because you have to add still the ballast.
Either with the covered ballast room like prepared by the kit and the contemporary drawings (british period) or somehow open (french period).
So I think, that the water barrel can not be fitted on top of the keelson.