In my opinion the total flavor should be near 15 for these flavor, It's a great set of compatible flavors.
try this:
2% Mango (TPA)
4% Pineapple (TPA)
4% Strawberry (Ripe) (TPA)
2% Strawberry (TPA)
4% Sweet Coconut (Flavorah)
Flavor total: 16%
I added the pineapple to get the sweetness and flavor total up, you can delete that and make the mango 6% and its great but I think the pineapple is good in this mix, and keeps to the "tropical" theme. And if you reduce the strawberries by just 1% and add 1% raspberry you will create the illusion of a stronger strawberry.
thanks for your input,i am gonna give your adjusted recipe a go. I am starting to get ahold of the mixing thing a bit more since i 1st posted this recipe.