Do not buy the Maverick if you want to mount optics!
I have the gun your looking at and it works just fine with irons, but those cheezy kits to mount optics are garbage IMHO.
For the money the 3 barrel or 2 barrel Mossberg 500's are the way to go!
The cantilever barrel that comes with the 3 barrel combo is ideal.
Even a standard mossberg 500 if it's drilled and tapped is a better option, but I have 2 problems with that. The reciever is aluminum, and I don't have confidence the threeads will hold up with any abuse, and 2, the barrel is not permanently attached to the reciever, and POI can change if you take the barrel off and on as the scope is mounted on the reciever.
This is the beuty of the cantilever barrel, which mounts your optics on the barrel, so cleaning and changing barrels doesn't mean zeroing issues.
The value in the 3 barrel Mossberg 500 is amazing if you price out the cantilever and turkey barrels on their own.
And I have owned every gun I have mentioned in this post, so I do have a little experience with your question.
For me I went back to the Maverick after selling my 500 setup and trying a tactical model with ghost rings. Just wasn't satisfied with the accuracy, and the tactical models way a ton.
Weight was a big factor in choosing the Maverick or 500 over the 870 as well. With the cantilever barrel and optics, or even just an iron sighted smoothbore 870 the weight is drastically different from the Maverick 88.
I have tried to find the ideal slug gun, and for pushing bush all day like we do down here I have settled on the Maverick with irons.
A set of Williams Fire Sights is a huge improvement over the standard sights if you want a little extra in the sights department, and makes the gun perfect!
I could go on, but I think that is all I need to say.
Any questions feel free to PM me.