Looker Studio Configuration for Comprehensive Reports

I need an expert in Looker Studio to configure a series of reports for my business. These reports will be crucial for tracking performance, understanding audience behavior, and optimizing our ad campaigns.

The reports I need configured include:
1. eCommerce & Revenue
2. Product Performance
3. Audience & Traffic Performance
4. Engagement & Behavior
5. Conversion & Funnel
6. Ad Campaign Performance
7. Scaling & Retargeting
8. Page Speed & Technical Health
9. Data Accuracy & Tagging
10. High Cost per Purchase Report

Data Sources
These reports should pull data from:
- Google Analytics
- Facebook Ads
- Shopify
- Google Ads

Insights Required
Specifically, in the eCommerce & Revenue report, I'm interested in understanding revenue by source.

Ideal Skills and Experience
The ideal freelancer for this project should have extensive experience with Looker Studio and the aforementioned data sources. They should be able to provide insightful, well-configured reports that will help drive our business decisions.