What is MA like for agreeing to a Change of Venue motion?

I am filing it as I have sole physical custody of my 2 boys (I'm the father), and last year re-married and moved from Plymouth to Hampshire county. My ex is still in Plymouth County.

The Motion hearing is May 22 (along with other motions to suspend her legal custody & visitation due to her being Section 12'd and currently in Pembroke Hospital).

Thank you!