Changing TOOLING from PO 'Other' to 'Inventory' with no INVENTORY COST

We have traditionally bought TOOLING through PO as ‘OTHER’ driving costs to an EXPENSE account.
Unfortunately, w/o inventory count or demand requirement visibility, there are times when we can’t start a job due to lack of common tooling.

Plan is to add TOOLS to a MOM as Material… in order to:

  1. Project JOB requirements quantities per TIME PHASE etc
  2. Aid Purchasing
  3. Manage Inventory …be able to RUN STK-STAT to see qty per TOOLS… at zero cost

At issue…
a) Do not want TOOLS costs within the system, to appear as added costs in Material Cost during Quoting, or on the Costed BOM report, or PDR report (estimate or actual), or stock-stat report
b) Essentially treat the TOOL PO as a half-hybrib… as adding to INVENTORY QTY, but EXPENSING to a GL Account
c) PO processing for OTHER drives value to EXP account… does not enable inventory qty
wonky to perform inv-adj’s against OTHER type PO’s
Can’t perform a Cost-adj as the associated GL Account on the TOOLING parts Part-Class

PO processing for INVENTORY has receipt amt for the parts  as to inventory value
      while the TOOL part class can target a GL Expense Account and be considered an expense account the part value is part of the receipt. 

Additionally, 3-way match… the receipt-cost, po, and Invoice need to enable AP-closure.

d) While a PO cud be input as OTHER with a TOOLING part on it, this defeats Inventory Mgt/time phase and awareness.

ANY SUGGESTIONS?