This didn't seem to make sense to me. So I looked it up and I believe that a 10 day PH with no expiration and no plus features is $479. An AP with the
DVC discount is $371. So you'd be much better off with an AP.
We also go once a year but schedule our trips to be twice within 12 months so we can use one AP for both trips.
You might want to consider getting AP's instead of a park hopper. A nice thing about the AP is that it lets you buy the DDE which gets you 20% discount on food and drinks at many restaurants. The AP also has some other benefits but the DDE is one that we find very appealing.