Seems to be a lack of type diversity in the team you're thinking of (a lot of grass & fire).
Prsonally I'd pick Cofagrigus, Toxicroak, Togekiss, Gigalith, Whimsicott and Donphan, because I often go for the unorthodox teams
Though it looks like you want to use Vulpix's Drought. In which case it would be a good idea to get some Chlorophyll users like Venusaur.