Shopify Migration Specialist for SEO Prioritized Store

Shopify migration specialist — WooCommerce store, SEO-critical (30
products)

I run SAVIOUR GK (saviourgk.com), a UK goalkeeper glove brand. The store is
currently WordPress + WooCommerce, hosted with Hostinger. I want to move to
Shopify without losing my Google rankings.
The store:
- Approx. 30 products (goalkeeper gloves in Junior and Senior versions, plus
glove bags, glove wash and T-shirts)
- Variants: glove sizes 3-11, apparel sizes S-XXL
- Collections for Junior, Senior, Sale, three glove ranges and four glove cuts
- Around 10 content pages (size guide, glove care, glove cut guide, shipping,
returns, FAQ, about, contact, privacy, terms) plus a blog
- Multi-currency GBP/EUR/USD, Klarna and PayPal, Meta Pixel installed, Tik
Tok pixel
- Domain stays the same and stays registered at Hostinger
What matters most to me: SEO continuity. The site ranks well and I am not
willing to trade that for a nicer-looking store. I need a complete 301 redirect
map covering every product, collection, page and blog post, plus metadata
carried across and 404 monitoring after launch.

Please include in your proposal:
1. Two stores you have migrated to Shopify, with the live URLs
2. How you build a redirect map, and what you use to find every existing URL
3. What you would need from me and when
4. A fixed price and timeline, with what is explicitly excluded
5. What happens if organic traffic drops after launch - who fixes it, at whose cost

Please do not send generic templates. I will only reply to proposals that
answer point 2 specifically. Budget is realistic for the right person.