For trap and skeet, IF the gun fits you well enough, it is a viable alternative. You never use anything more than 2-3/4" target loads for trap or skeet -no need for 3" anything in that regard. A pump can be a hindrance when it comes to shooting the doubles portion in skeet - that will depend on your ability to work the slide while keeping the barrel on target - not easy, but doable.
You never said what brand your O/U is, but any decent one from Beretta or Browning would be more than up to the task
IF you get the Express instead of the Wingmaster take note - most of them require to finish polishing the chamber on the Express, not so on the Wingmaster