enough power?

[gunn3rrr 10+ year member]

i wanna keep it under $500 and i can get a deal on the rf

 

[RAM_Designs 5,000+ posts]

Is the RF new, are you against buying used? You can get 3kw for $500 nowadays, which will leave you plenty of room to upgrade subs in the future. Just do some minor electrical upgrades(assuming your stock alt isn't tiny) and you'll be fine.