One sentence--three objects of ing form

Have you a team I could join? And then maybe we could form another team using the rest of my team and a couple of new additions, perhaps people you know.

I see the bolded phrase as a third object of the ing verb 'using'. Do you agree?

And is the sentence grammatical as written, or do you think a comma before perhaps is not right?

Or do you think it should be '...using the rest of my team, a couple of new additions, and perhaps people you know.?

Thanks