Overkill in my opinion.
Until you get a head rechambered and high rpm porting, you are not really hauling any extra air.
Yeah, yeah, I know there are guys who cannot believe this, but your carb is not what is holding you back at the moment.
You can make 30hp on the stock carb, do you feel like you have double the original hp?
Spend you money on a cylinder head and quench gap it.