Why don't you plan a pumpkin beer for your next batch and leave this one be to drink and enjoy? Rather than throwing something against the wall to see if it sticks, or in this case your fermenter, why don't you do a little research about creating recipes, especially pumpkin beers, or look one up, and do a recipe that you know will turn out, rather than seeing IF this turns out.
You know this beer will turn out....If you brew a pumpkin beer from an established recipe, you will know that will turn out....you DON'T know that throwing a bunch of crap into THIS beer will turn out.
Presumably this isn't going to be the ONLY batch you ever brew, right? So do you have to throw the kitchen sink into it? Or can't you enjoy this one while your pumpking batch ferments?
Recipes are about balance. Figuring out what works with what...NOT just tossing a bunch of stuff in without knowing anything about creating recipes.
I mean, if you have to ask how it will turn out, maybe you should just leave well enough alone.