Hi. Happy to share some of my thoughts.
1. Usually you want to submit your best score and only one of them.... Esp if they are not above average. There are several reasons for this, one of them is that if both of your scores below average, the school has to report both of them on their averages for the class and so if you submit both, they take two hits instead of just one.
2. Or you can find the averages for the full-time program and my guess your Jerry is closer to the average than your GMAT.
3. Deferred programs are pretty competitive at least the ones I’m thinking about so both of these scores may be on the below average side, and if they are and you cannot retake, or improve, I would write an additional essay or comment that would really be two or three sentences speaking about your amazing undergraduate GPA and how the test scores are just not your strength. Do you want to make it not as an excuse but as a casual comment because you’re so awesome and this is just an oddity.
4. There’s been observations about GRE scores fluctuating and jumping all over the place so you may accidentally, and I mean seriously accidentally get a meaningfully higher score on the retake or similarly accidentally a meaningfully lower one. If you have $200 to spare, you can play the roulette but if you don’t stick with the 321 you have and write an optional essay.
Let me know if any further questions or if my typos make no sense 😂