ICM Nash Calculator Results
That gives 12.5%, 44+ A7s+ ATo+ KJs+ KQo QJs if UTG is pushing 30%. The overcall ranges may be a bit tight but I think the 15% and 20% blackize said are too loose cos poker is a teamsport after all and people tend to respect a shove here. If we scoop the 3-way pot we're CL or close to it. And if we fold we'll take a sngpt -ev spot anyway.
I guess the range is pretty close to the same as it'd be if UTG had folded. Fold most of the SCs and weak aces?