New to mining to help do my part and my first post!

Big shout out to CK - honestly love what you're doing! Amazing

My story - my first mining setup at Canaan Avalon Miner Q 1x 90th asic and 2 x bitaxes to start off on my own node and local ckpool running on a dedicated powerful server for a bit of fun

For this setup:
1) What is the best - min/start diff in ckpool.conf give my 3 miners (90th and 2 x 1th)
2) Best update_interval in seconds?  is lower like better but I think it caps at 10 seconds? As Create new block logs shows 10 seconds no matter how low i set it
3) Optimized nonce1legnth and nonce2length? given my hashrate above
4) Is it better to have my bitaxe on another server to split it if it impacts SPS?

Here are my stats from logs: {"hashrate1m":"80.6T","hashrate5m":"84.7T","hashrate1hr":"82.4T","hashrate1d":"81T","hashrate7d":"54.3T","lastshare":1752402374,"workers":3,"shares":12851087015,"bestshare":22628632347.360809,"bestever":22628632347,"authorised":1751685205}
[2025-07-13 11:26:16.033] Pool:{"diff": 0.01, "accepted": 12851087015, "rejected": 23557258, "bestshare": 22628632347, "SPS1m": 0.732, "SPS5m": 0.72, "SPS15m": 0.737, "SPS1h": 0.743}
[2025-07-13 11:26:23.145] Stored local workbase with 348 transactions
[2025-07-13 11:26:53.147] Stored local workbase with 381 transactions

Is there any maths to above, I am a numbers guy