I have a few questions regarding yard prep and installing a play set. I'm buying a used play set here in a few days and I need to do some yard work to get it ready. The location I'm thinking of putting the play set in is a low area(~ 500-600 sq ft) that will typically hold water after heavy rains or a few days of rain. I would guess it is maybe 2-3 inches low. See picture.

My questions are. If I want to place the play set here Do I need to build up the area? I'm planning on using landscape timbers to enclose the play area and fill it in with something. If I do that would filling it with whatever I decide cause more issues?
Also, What is a good product to fill that is relatively inexpensive and looks good? I saw on Entergy's website, you can request free wood chips from trees they have cut down, but it would be a mix of random trees. Would that be an issue?

My questions are. If I want to place the play set here Do I need to build up the area? I'm planning on using landscape timbers to enclose the play area and fill it in with something. If I do that would filling it with whatever I decide cause more issues?
Also, What is a good product to fill that is relatively inexpensive and looks good? I saw on Entergy's website, you can request free wood chips from trees they have cut down, but it would be a mix of random trees. Would that be an issue?