Long-term I would want all three of Rodrigues, Larsson and Girgensons, but there are two factors that impact this. One, is that short-term, I think Moulson, Ennis and possibly Gionta make it very difficult to keep ERod on the roster - you need to lose one of the two, and that is a tall order. Secondly, I don't think Girgensons would be happy on a fourth line, and frankly, if ERod brings this game with consistency, he's a better option that Girgensons in the top 9.
It's not a tall order... Gionta is a UFA, and Ennis/Moulson could be put on waivers and sent to Rochester if the young guys beat them out
No one is happy on the 4th line... tough ****.