I'm new here so this may be a novice answer but I'm happy to posit an idea. I'' let you take a look at this chart (https://en.wikipedia.org/wiki/Hill_sphere#/media/File:Hill_sphere_of_the_planets.png) from the Wikipedia page on the Hill Sphere around which the moons of planets can orbit.
From what I understand the Hill Sphere of Jupiter is influenced by two main factors: 1) It's distance from the Sun and 2) It's mass. I can figure this by comparing it to all the other celestial bodies shown. The Inner Planets have smaller Hill Spheres than the Outer Planets due to being closer to the Sun meanwhile whereas Jupiter clearly having a larger HS than the Earth or Mars owes to its greater size as well as distance, the fact that Neptune has the largest HS proves that distance from the parent star can influence HS size to greater degree.
Now for what this means for your planet. You've changed the star I see. If it's sun like then that makes it a little easier. You need to take into account the effect of tidal heating of you're moons around such a large planet which might actually require you push it out further than Earth. The type of planet or planetary system can determine where is most habitable too. This increases the Hill Sphere size.
I think someone more mathematical than me could work out the math from here but I provided a base to work off.