Dear applee,
WES regular service is 7 working days from the date they recieve all documents in required form & procedure. I don't know from where you found this two month period. The only thing I recommend you to send your document through well known courier (3 to 5 days) and pay WES extra $ 100 so that they can send report via courier (3 to 5 days) too. If you don't pay extra $100, then WES will send your report through regular post which might take 2 to 4 weeks depending on your location/region.
I would recommend you to act immediately, prepare your application and apply as soon as possible.