Dude! Very cool! This so has to do with your guitar specifically, it might not translate well to another, but I like where you were headed. Now, what I gave you for frequencies was totally just off the top of my head, and the Q is really really really really really important here, so those need playing with. I started tweaking on my own, but tweaking for my bridge won't sound like yours and will only help so much.
Here, I don't know if you're looking for a Strat, P90, or Humbucker in the neck, but I did a tone match of my JB bridge to my noiseless Strat neck (Artec Giovanni GCS-LN). This could sound like garbage on your guitar, but it's something. It sounded good on my guitar with this preset, convincing enough where a PEQ after would seal the deal. I've uploaded both the esported IR as well as the tone match block itself, where you can see the actual frequencies that were cut and boosted. With the tone match block, when matching pickups, I've found it can be best to use a fair amount of smoothing too.
If you want, record a short direct dry track of you playing through your bridge pickup and upload the file here. Upload a preset you like too and let me know what kind of neck pickup you're looking for; hell, link to a youtube video of someone playing with a similar tone for reference. If my noiseless single coil will work, I'll tone match it for you and we can see if you can just use that. This is my only functional guitar right now, so if you want a P90 or neck humbucker tone, we may have to ask for some kind soul to lend a hand by providing their own direct dry track copying what you played to tone match. Even if the matches don't work for you, you'll be able to see broadly what kinds of boosts and cuts to make. We'll see if we can make this happen.
Also, if you have a buddy who has a guitar with a neck pickup you like, you can just tonematch that yourself on the spot. I set the config page of the tone match block a particular way, which you can see in my block library file here. Just put it right after the Input 1 block.