[crazy charlie]

There has been a lot on this subject on the S&W forum.
You state you haven't fired it yet. Fire it and if you don't like it, then if you find it unsatisfactory look for some improvements.
The trigger has always been controversial on this model. There are so many fixes(?) on the S&W forum I can't count them all.
If you want to alter the trigger be prepared to affect reliability as well as your lifetime warranty.
If you decide to sell it make sure you state you have monkeyed with the trigger to avoid a lawsuit in the event there is a catastrophic failure.
Now, I have a Sigma 40VE. The trigger is not as plesant as a target pistol. In fact I have sent it to S&W for a trigger problem (failure to release after firing and for binding).
It is an accurate pistol and the more you fire it you will get used to the trigger or you won't. I've had double action triggers that were worse.
If you want to get educated(?) enlightened(?) on the Sigma trigger go on the S&W forum and be prepared for an endless list of fixes(?) from removing springs, to polishing, to altering parts.