Mass User Acquisition for AI App

My niche-need AI app opens its public waitlist in two weeks, and I want explosive traction from day one—at least 100,000 to 250,000 real users on board within the first one to two months and momentum that keeps building after we go live... (Budget: $30 - $250 USD, Jobs: AI (Artificial Intelligence) HW/SW, Digital Marketing, Growth Hacking, Internet Marketing, Search Engine Marketing, SEO, Social Media Marketing)