Lots of people use an Equal-i-zer hitch on top mounted coupler without having any problems. I suspect you will be the same.
If by chance you meant a normal WD hitch that many call an equalizer, then the same goes for that style hitch. If it does hit the coupler then the solution is usually to use a ball that that has a bit more rise.
Enjoy your new trailer.:)
Barney
2004 Sunnybrook Titan 30FKS TT
Hensley "Arrow" 1400# hitch (Sold)
Not towing now.
Former tow vehicles were 2016 Ram 2500 CTD, 2002 Ford F250, 7.3 PSD, 1997 Ram 2500 5.9 gas engine