I haven’t tried the shisha mango, but from the notes it looks like it tastes like under ripe mango… is that what you get from it? If so, I’d probably add a juicy layer to the mix. Peach hides easily behind mango, so juicy peach tpa could work there. I get quite the bite from coconut extra tpa, so I might start a little lower than 1% (just for my personal tastes), and then add in a little pineapple. My reasoning is that pineapple as a background note can kind of trick your brain into thinking “coconut”. I think sweetening this mix would be beneficial too.
I’d start with something like this:
Mango shisha INW 2%
Juicy Peach TPA 1%
Coconut extra TPA .75%
Golden Pineapple CAP 1%
Sweetener (whatever you like)
And then based on how that steeps (I would wait a week to start testing), you could add just a smidgen of cream if there are sharp notes hanging around.