Cache is cache, you can't get better cache than... cached...

For $20/month subscription, Charm Hyper gives you $12.50 per day, for a total of $350 per month. Like I've mentioned in other comments, OpenCode Go performance and rates are terrible now, there are several better options.

Quantization is not trash, there's a year of evidence that shows Q4 provides ~4% degradation and Q8 provides ~1% degradation, and you don't need that severely quantized to gain benefits in inference performance.