Planning to spend ~$100 benchmarking differnet Qwen3.8-27B quants and kv cache and looking for input before I start

TL;DR: I'm planning to spend around $100 on cloud GPUs to benchmark Qwen3.8-27B with a focus on questions that actually matter when running it locally: different quant levels/providers, 8-bit vs 16-bit KV cache, GGUF vs EXL3, context length tradeoffs, and token efficiency on coding/agentic workloads