if you have the skill set to run the tools you’ll need to run in order to perform this type of test I would advise just renting a bunch of low-cost VPS systems and configuring them to do a jam to do cuz you can rent computers monthly for just a couple of dollars on things like digitalocean or ovh or something like that and as long as you’re targeting your own stuff I mean you’re not going to call the cops on yourself so nothing to worry about