There are significant upgrades to the pro from the Air 2 if you are looking for better performance out of specific features.
If you used this an hour a day very casually as a consumption device primarily, the extra cash may not be worth it, and it may be more worth it to wait.
If however, you find that you really work on it a lot, if you do a lot of typing, use it for reporting and spreadsheets, if you find the pencil would be useful, than totally worth it.
Keep your eyes on Best Buy and Staples, they offer aggressive deals all the time. If it is just a matter of more storage, with patience, you will find what you are looking for.