Advice on picking a theme for Magento2 Migration

I have a site (running Mag1) that we are gearing up to migrate to Magento2. Speed, support, and development time are a factor as we need to be PCI compliant at a certain time. I do know that building a child theme off of blank/luma may be the way to go, but I also know that this can be painfully slow. Are there any themes out there that you could recommend that are lightweight, supported, and would cut down on my dev time?

submitted by /u/The-Jake-Gatsby
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