well i dont know about how long to leave it in there,
but its not going to rot , early on fruit can make some bad smells
like sulfur and farts

but that passes and seems to be worse in you dont have much free nitrogen.
what did 3 lbs of puree look like ?
i think this is going to need to sit for every bit of a week if not 2 just to settle and clear right..
i would think that by makeing a puree, you may get alot of pectin
which will not hurt the beer but will make it very hazy ,,,but hey it is a whear beer.
i have only made a few fruit meads and ciders . i have in the past just blanched the fruit in boiling water and then wiped the peel off with a dish rag , it take like 30 sec in the water and the peel comes right off most fruit. afterward i just cut it up and droped it in the primary it turned out good .