Assuming it's 3 - 4 feet from your sump water line to your display water line, that pump will give you 349-376 GPH
of return flow. Ideally then, you need an overflow that's rated for 400 GPH
or more (a little higher than the return flow is best.)
The u-tube type is generally more reliable than the box type, but at that low a rating, you might not get alot of choice.
To reduce the chances of overflow failure, and messy wet carpet, you could get an aqualifter pump to keep sucking any built up air bubbles out of the siphon.