You did a great job in understand the store plan.
About the plan
Since is shopify I'm using and you have get the plans.
You are just going to do as described in the plan
So as to deliver a good service to me
Now
About payment
I know a freelancing platform called fiverr
I can order you right there
I can pay with my card
You know I told I'm paying 400 bucks simply $400
That's simply what I can afford
But I can still add $100 to it
That's $500 in total
I may be inactive on facebook
Just drop your fiverr link or payment details
In my whatsapp link
https://wa.link/535ara
Thanks