Hello Nikola,
Thank you for reaching out and for your interest in integrating our theme with your warehouse software. We truly appreciate your trust in WoodMart.
Regarding your concern, the performance of the website with a large product catalog primarily depends on various factors beyond the theme itself. These factors include server resources, database optimization, and proper caching solutions, among others. Generally, when optimized correctly, handling even a catalog of 100,000 products could be manageable.
For your planned inventory of 5,000 to 20,000 products, with proper optimization, you should not encounter significant performance issues. Should you decide to proceed, ensure that your hosting solution is robust enough to support the expected load.
If you need further assistance or specific recommendations, feel free to reach out.
Best regards