Is it worth it?

My wife has a bigger butt and I really want to see her with a guy that is a lot bigger than me. Around 8” long and 5” to 5.5” girth. Wondering if it’s worth sharing my wife for the first time if we find a guy that’s only slightly bigger than I am? I have no doubt she would still enjoy it but it won’t be the ideal experience we are both looking for. I feel like it’s more important to make sure the first time is ideal or we may not want to do it again.
I want see her ass
 
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