If you advertise on google it´s better! but you might need to have patience to wait a bit longer for their digital intelligent to crawl and index your shop, your products , shipping, payment pages etc. Atleast 30 days minimum. What i have learned is also that You might consider paying extra care on your products incase you are droop-shipping! Am not quite sure if google is a fan of droop-shipping business model.
You can also contact the customer care on the Apps you use for marketing on shopify . They do offer professional helps.
As for your shop site, it looks very nice i will say. Good job indeed!
Do you use google merchant? i will recommend using it , if you don´t. Because people search in google most of the time than at Facebook. Even though both are quite very good to driving traffic but when it comes to shopping i do believe that people traditionally opt-in to google.
Also your product is a factor. If you use google trend to monitor your product or niche, you will definitely know where you stand! However, i will recommend you to stick to your passion because you FIRST. Doing what you like is cool indeed.
That´s all i have, i hope it help you somehow.