I personally believe you know that your RV handles well and it would be safe and controllable at higher speeds, under adverse circumstances, than the Seneca is capable of, as is. I understand what YOU want.
I also am of the opinion that NO ONE on this forum, nor iRV2 knows the answer to your question.
Wish I could help. Anyway, I have found some of the comments quite amusing.
Mike & Gail
2011 Greyhawk 31SS
prevoiusly had a Jayco Jay Flight 26BH - loved it! :)