Goku being born with SSJ4 in fanfic would likely make him a force to be reckoned with from infancy. This could result in quicker power-ups, different battles, and maybe even a shift in the balance of power among the characters.
One scenario could be that Goku surprises Beerus with his speed and initial attacks as SSJ4. But then Beerus counters with his hakai and forces Goku to dodge constantly. Another could be that Beerus underestimates Goku at first and Goku manages to land some powerful blows.
Well, in many fanfictions, SSJ4 Goku is often depicted as having a chance against Beerus. SSJ4 Goku has shown incredible strength and combat skills. But Beerus has the power of a God of Destruction. His hakai ability could potentially wipe Goku out. Still, if the fanfiction is written in a way that gives Goku some new power - up or a special advantage, he could win. It really depends on the creative direction of the fanfic writer.
It depends on your preferences. If you like action-packed and fantasy-themed stories, then you might find the DBZ Fighters story enjoyable. It has exciting battles and interesting character arcs.
It's a bit tricky to say for sure. The number of DBZ manga can vary depending on different editions and compilations. But you can find detailed information on dedicated manga websites or forums.
First, you need to have a good understanding of the DBZ characters and their storylines. Then, sketch out your ideas and plan the panels. Pay attention to details and use dynamic poses to make the comics exciting.