Nobody knows your household like you do! Your kitty is now an adult! Know that male bengals are territorial. You have to also decide whether to get a male or female kitty. People often jump to conclusions that aren't there -- my bengal is bored, my bengal wants companionship. That may or may not be the case. Adding a new cat to the household can be stressful and can take a lot of time and effort so the kitties get along together. There will be at least another litter box, extra toys, double the vet costs, etc. And are you prepared to handle two maniacs running around at times?
When we are out on our walks and Raiden sees another cat, he runs over to it -- not to play, but to fight it! I have a neighbor's cat who likes my yard and Raiden does not want him here and makes that very clear. The other cat is so laid back, it doesn't really care.
You just have to think long and hard as to whether you are up for this. I'm sure your kitty can find a way to get along with either a kitten or a cat of similar age. And it may not matter whether the cat is male or female. Introducing the cats properly is the key.