Questions about some decision making...help?

I currently have a raspberry amber in the primary and it has been there already for a week. I have yet to add the raspberry purée and I also have a chocolate stout in my only other carboy that is coming up on three weeks. Should I just go ahead and add gelatin and raspberry purée in the primary and have minimal splashing or bottle the stout and rack the amber onto purée in a secondary and risk oxidation? I have no way to carbon dioxide purge.

Is there any harm in adding to primary? I'm kind of impatient and ideally I could let the stout age a while in the primary it is in more. If I add the puree will it disrupt any of the fermentation by taking precedence of the alcohol tolerance of the yeast?

Adding fruit puree to the primary (after the first fermentation has died down) is fine. I wouldn't add the gelatin until after the second fermentation is complete.