I don't understand the conundrum.

Starting with full & full, the chokes can become any combination one desires for another $150.

Yes, spreader loads could give the option of, say, a pair of IC chokes. Those would be helpful for clay targets, but I wouldn't use them for hunting.

Compared to all the other things to consider when buying a 26" Sterlingworth, the present chokes would be a non-issue for me.