Steps in rolling up costs from one period to the next

Hi,

We are required to complete a number of different processes at month end to allow for successful rollup fo OPM costs fro mone period to the next. However, this process is very time consuming as most of the processed require Org by Org completion. Just wondering if there is anyone who has come across quicker ways of completing the processes eg Concurrent requets to group org by org update into single update

The steps include

Opening of Inventory periods (Individual process for each org)

Cost Calendar Update (As above)

RollIng up of Source Orgs (As above)

Cost Copy (As above * 3 (Item Cost/Resource Cost/Overheads)