I'd let the must ferment out a bit before racking onto the cranberries to get it a bit closer to your target SG. Particularly if you did not use a wine yeast like Saccharomyces cerevisiae in the cider.
Cranberries are notorious to ferment for having benzoic acid in them. This is a cousin of the preservative Sodium Benzoate ... but is even a bit stronger antifungal/microbicidal ... so much so that, cranberry wine often needs to be made not only with an aggressive wine yeast, but the juice also sometimes needs to be pre-inoculated with a dose of the yeast to reduce the benzoic acid ... then a strong starter of the yeast is used. (yup, learned it the hard way)
I'm not sure if dried cranberries keep the level of benzoic acid that fresh cranberries do, but it's worth keeping in mind.
One thing positive for adding the cranberries to the cider is that in a higher pH cider must, the benzoic acid is not as effective. While your pH is not to the point of negating the benzoic acid effect, which is around pH 5.5 or so, it is probably well above the pH that the benzoic acid is most effective, which as I recall is in the mid 2s (say, pH 2.5).
On the other hand, if your SG isnt far off of what you were intending anyway ... and the fact that the pH is a bit higher ... and you are only using dried cranberries rather than fresh (or juice) ... Id say it will turn out well either way.