Nitrous is effectively cold "boost". You're getting the dense air charge, minus the inter/after cooling needed when using forms of compression. Keep in mind, power is power. You're making the same pressure in the cylinder fairly regardless of means.
The more people you bring to a party, the more of a chance of trouble happening, same goes for situations like these. I would recommend a balance; keep the turbo at it's highest efficiency point and use a small shot as icing on the cake. Plan for the combined power and back calculate airmass to check your fuel system can keep up.