T-slot opinions wanted!

Before I run dados to Mount this t slot rail system in my new outfeed/work table, I was wondering if anyone had any opinions on it. It’s my only work surface other than my table saw.

Not sure if I “need” the long runs on the sides or not but thought they could come in handy down the road.

The table top is 50” x 60”. The t slot grid is 12” x 12”. Thank you!