My advice would be to make a few batches straight up, so you understand the processes and how to adapt them. Only then, after you know what you're doing and have researched various fruit-beer recipes, should you attempt one.
Look, I understand where you're at - we've all been there. We've barely pitched yeast on our first batch and we're thinking about doing a chocolate cherry russian imperial barleywine. And when I say 'we', I mean 'me', except that I see a lot of inquiries like yours from time to time. My first batch was decent, my second was a cherry wheat (to please SWMBO) that was full of guesses and turned into a dumper. You gotta walk before you can run.