Wix template website created

hi. I am looking for someone to help me get a website up and running. I have chosen a Wix template that I like but need added categories, and to personalise it to my needs a bit more. I already have a web host (not wix) but need everything connected up and running.

I am starting a selling merchandise platform which I want the orders to go through my Printful online orders. Basically I don't want to do any orders, mailing , returns etc, I want it to go directly through to my Printful account and everything gets handled that way. I need you to be familiar with Printful. I also need guidance on how to make this all happen / what's possible, what isn't and any other suggestions you can make.

I have started an ETSY account, and likewise I want all this connected. I would love to connect Amazon and Ebay but have no idea how this all works so need help setting up and connecting

Please reassure me you can do this if it is possible and what you offer alongside the web design work

I have included what I have done so far. I love everything about the Wix template, I just need more categories and maybe some tweets here and there

At the end of it, I want it all up and running smoothly please. I don't understand the mechanisms of it, I am a creative so understand what good design looks like but that's about it