Went through your complete requirement and would like to assist you for the same. You can reach me at firstname.lastname@example.org for a formal quote.
Thanks for sharing your requirement here.
I can help you with the mobile slider in the Brooklyn theme issue. I understand your requirement & ready to help. Please share me details of the store.
My email id is email@example.com
You can catch me on skype too - firstname.lastname@example.org
Waiting for your revert,
Shopify Expert - Atique/99coders
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MS Web Designer