Most people have a master fuse, and then some have a master and then smaller ones for the ESCs.

The only issue with not having a master fuse, is that the tech checker will have to ensure the fuses will kill all draw on the battery if they both blow.
This is likely not going to be the case as your power light will probably be split off before the ESCs.

In short, if you can find one big enough, make sure you have a master fuse. 180-360a