Lube Lane Inventory

We just started a express lube lane and I am in need of some advice as to how to manage inventory. To start off it will only have Oil filters , but we will soon want to add Air , cabin filters etc. But here goes , we are on Reynolds and started to use SPG (Service Price Guide) which will relieve inventory and that seems to work seamless but its the Oil filter inventory we place out in that area that has me with some concerns. How does everyone handle the stocking? do you pre charge filters to shop and let them deal with +/- inventory or do you do a daily or weekly count to reconcile and restock . How's everyone doing this ?