As a precursor to this post, I have yet to develop my own recipe and have been brewing AG kits (mostly from our host) for the past 3 years and extract kits for 2 years before that. I have tinkered with some specialty grain additions to kits that I have brewed many times but never designed my own recipe. . .yet.
The only NEIPA I've ever brewed is Off the Topper from our hosts. The only bittering addition is hopshot, then there is 7.5 oz of flameout & whirlpool hopstands. I do this side by side every year with the Plinian Legacy, which also uses hopshot for the primary bittering charge but it has a 1/4 oz FWH, a 1 oz addition at 45 minutes, a 1 oz addition at 20 mins, then 4 oz flameout hopstand. Both hopshot additions are 10 ML, which according to This roughly calculates out to 100 IBU. I am unsure how accurate that rating is but it's the only bittering addition in Off the Topper, the rest are all flavor/aroma additions. Both have two dry hop additions as well. According to my software I use, Plinian Legacy calculates out at 162 IBU and Off the Topper calculates out at 90. Again, I don't believe these numbers to be completely accurate.
I am not the best at descriptions but if I had to describe the difference between the two, Plinian Legacy comes out crisper, more bitey whereas Off the Topper comes off a bit smoother with more of a nose. I enjoy them both equally, which is why I do them side by side every year. As several others have mentioned, I would think you may want to bump some of those hop additions to later in the boil or to a flameout hopstand if you are going for a NEIPA style.