I just purchased a standard SP01 manual safety. The sp01 with firing pin block can get very close to a shadow trigger but will require CGW parts and a CZC hammer. CGW hammer is a no go for IDPA. It will need a few hours of polishing and fitting. If you go with a tactical send it out to CGW dont even waste your time on it.
The action parts are going to be in the $300 range
Other parts that are a must include
sights $90+ plus fitting
Extended mag release $35
11lb recoil spring.
You should plan on $400-$550 in parts for the sp01.
The sp01 shadow only needs a good polishing and $30 in springs for a excellent trigger.
If I was to do it again I would buy a standard sp01 shadow. The shadows also have a lot more options for rear sights.
The accu shadow and czc shop limited runs are not idpa ssp legal.
The shadow 2 is a no go for all idpa divisions because of the weight.