Ice-cream bean is a novel but ultimately low quality fruit. There's a lot more cons than pros.
I'm sure you'll enjoy digging out the 10,000 suckers you'll get every year from a fully grown tree JC. Literally every seed will germinate also. The wood is worthless and brittle, and is the first thing to break in the wind. Puffy flowers will clog guttering in close proximity. The fruit tastes like wet cotton wool soaked in sugar.
Pretty much the only positives are abundance, they are nitrogen-fixing, and are a very attractive tree.