With that low top weight, you could probably swing that CG to above your fingers and you still probably wouldn't need a weight hole. I just drilled a Rotogrip Odyssey Pro-CG that the CG was about 2.5" to the right of the pin-RG line and with 2 ounces of top weight. I drilled it pin under the bridge and RG on the VAL which put the CG almost even with the fingers, about 3" to the right, and I didn't need any weight hole. This TNV looks almost the same. Lay it out first and balance it and see what happens. Like I said, with that low of a top weight, you should be fine. Good luck