New shopify store

I am interested in creating a new shopify store and migrate my products from my existing non shopify store to the new store. I have about 200-250 products. My current website is http://www.rochies.com
I have been a brick and mortar company in the customization of apparel, this year due to COVID we decided to pivot to e-commerce so the back end of the Shopify store has to have all the functionalities of a POS system as well as allow for marketing, email blasts, loyalty points, shipping, payment, most importantly make it easier to sell on all the social media platforms shopify can sell.
We dont have to migrate the existing orders as there are not that many and I can download the list of people who have signed up for our Newsletter so we don't have to worry about them either.
I have a customization tool called “Preview Generator” which was developed for my company and can be seen in the “Create Your Masterpiece” part of the website, where clients can visually see the design. I have the database in my dropbox and I would like to move this customization tool to the new shopify site. IF there is no app that works already with Shopify for customization I subscribe to a platform called Deconetwork which can be used.
As far as the website design and layout I want something simple with capabilities to put some short videos or links to videos , links to my social media and Instagram feed being visible in the bottom of website. Chat auto response functionality and for a few hours a day live functionality
I don’t have a big budget but I do want to have a shopify website with the basics which I will be able to upgrade as we make more sales
Please send a list of comparable websites you have created, price and project timeline.
Thank you