Do i need another battery/ alternator?

hi, will some one please clear this up for me? i have 2 12" Kicker CVRs and i am getting two more. i have a 2000 dodge durango with the stock alt that puts out 140amps. the battery is a yellowtop deep cycle. i already did the big three. so my question is when i get 2 more cvrs (for a total of 4) will i need another battery or a new alt? the total wattage will be about 3300. also if i am going to need either wfat size alt or battery should i get? thanks for any advice!