Stock items

 We are planning to initiate a process of inventorizing the items of a telecom company. During the process we need to evaluate on the following decisions:

1- If sub-inventories will be made without locator control, can it be converted to have locator control after any transaction with no locator control option.

2- While definig the stock item what would be the best business practice for choosing the following:

in costing information (Costing enables+Inventory Asset Value) we are not a manufacturing concerns

3- Before implementing the stock item process, what inventory accounts needs to be vated from our finance department