you will want to change your plugs to a TR6 or so, and if you are not spraying more than 100 I would not worry about a controller. Just use the WOT switch and you will be ok. Depending on your tune you may want to pull timing E.G if you are spraying 100 you probably dont want to run more than 26 degrees of timing. Anything over 125, and you will have to do a bit more homework. I suggest a WBO2 or tuning a wet shot will be a guessing game. Regardless of what you decide on you will want to pull your plugs every so often and check for signs of electrode deterioration or detonation on the porcelin.
Nitrous Plug Pictures and discussion