Rear spring options on stock shock?

[highside299]

I am looking for a heavier rear spring on my stock rear shock that was re-valved by Aftershocks. Correct if I am wrong, the bike comes with a 9.0?
I have a 9.5 Ohlins spring in there now, but there is a lil wiggle room.
I am 220 with full gear, fast B rider, slow A rider (depends on the day )
Recommendations? Txs in advance