Ordered a 4 utility head from maltby. Planning to use it off the tee primarily and punch out from trees.

My set is ts3 6-pw and ts4 gw with modus 105 stiff shafts. 7 iron swing speed is 86 mph.

I have a spare Mitsubishi mmt 90g graphite stiff shaft Im thinking about using for the maltby head vs paying for a new more utility focused shaft.

What do you all think of that choice?