NB Hop Shot Question

I’m thinking about brewing Northern Brewer’s Cascade Mountains Double IPA, but with the hop shot. I’ve never used the shot. How many would I need?

I have a few syringes that I have not used yet, which I purchased from Brewbrothers. I’m not sure how similar they are, but Brewbrothers.biz has a IBU calculator on their website. Here is a link

http://brewbrothers.biz/Hop-Jizz-Extract-Calculator