WooCommerce. For or against?

Question

Online shopping

Hello! For me, the question of choosing a CMS is now relevant. I ask for advice.
There is an online store on a self-written engine, 600 goods, 450 visitors per day. The number of products, for example, can grow to 1000, visitors also up to 1000.
At first I looked at PrestaShop, but for it the module I need costs 249 euros with updates for a year, for WooCommerce 29 dollars with lifetime updates. There is no suitable module for OpenCart at all. According to the pingdom test, the Flatsome theme with a built-in builder for WooCommerce shows the best results compared to the top themes for Prestashop and Opencart. So I’m thinking, stop at WooCommerce and work further on it, or overpay for a module for Prestashop, but for the sake of what benefits?