Script to enable reservation of inventory to non-webstore customers

I have a need for a scheduled script which would be able to disable webstore sales for items if their available quantities fall below 2 weeks supply, in order to reserve this inventory for our B2B customers..

Basically, if specific location qty available is at or below 2 weeks supply (previous 90 days sales / 6), then script would check box “true” on field “Don’t Show Price” (Field ID: dontshowprice ). Otherwise, It would un-check same box (items are now back in-stock, and available for sale in webstore).

We want the items to continue to display on out site, just not for sale......

I think this could be a fairly simple script, would greatly appreciate any help, or if someone could point me in the direction of somebody who may be able to write this for me.