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Well done for giving it a go and sharing the outcome! You'll now get all sorts of unsolicited advice and unwanted suggestions: here's my probably unwelcome contribution.
Change the orientation so the layers run vertically. Probably need to support 'everywhere' which will then need finishing.
Also increase the skin thickness until there is no infill - even at 100% fill I'm pretty sure the continuous bead of the shell will be stronger than a fill matrix.
Yeah, that would work. I've done similar in steel, less cool then just printing.
The bags seemed to work at least.