Thanks for the info and tips
Now I think I sell away all the Wild Dwellers items. It's a nice bow, but I've find already other very good bows

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Next time I play again I go later to the Temple of Doom so I have a stronger Summon Ghost, more HP and so on ... stupid I did not think about to summon my Ghost to help me healing !

).
Or, I must wait until level 15 and put a point in Healing.