SEO/Google Ads Expert for Shopify

Hi! I recently finished setting up my shopify store, Velebitlifting.co.uk. I sell lifting chain slings for cranes. I already have an ebay account which is very young too and i am doing about 2-3k per month. I had a shopify/seo expert who was good but had trouble keeping up with timelines he made for very basic changes on the website, which caused a lot of frustration. I wish to achieve at least a similar result with shopify by matching the ad spend with the current money i lost on ebay fees. Main competitors are: https://liftingequipmentstore.com/collections/chain-slings-lifting-chains, https://www.safetyliftingear.com/categories/chains---rigging?srsltid=AfmBOorHVXJIXlnpbpK3JlRcQBLlJ-oglKxA8pJwSQDcRwh2b2hvdUQX, https://wsbmanufacturing.co.uk/collections/lifting-chains I have set up google ads but i am very confused and i want someone who knows what he is doing to help me set up and optimise this whole orderal. Punctuality and communication is very important because i am driving the crane 10hrs per day so i need someone who will be able to explain things to me easily and work around my "handicaps" with accessing the computer during most times. The budget is 250 usd per month (fixed with no negotiation) and ads budget is the same. Kind regards,