How are you hooked to the web? You download and install the apps directly on to two computers. Here are the connectivity requirements
directly quoted from Adobe:
An Internet connection is required the first time you install and license your apps, but you can use the apps in offline mode with a valid software license. The desktop apps will attempt to validate your software licenses every 30 days.
Annual members can use the apps for up to 99 days in offline mode. Month-to-month members can use the software for up to 30 days in offline mode.
As far as business expense goes, I'd rather have Operating Expenditures (monthly charge) than Capital Expenditures (traditional purchase and license). Operating expenses are fully deducted in the accounting period during which they were incurred.