Welcome to our forum and congratulations on wanting to do your research on bengals. The first thing you need to know is that the bengal is nothing like your ordinary cat. A bengal will not behave like your other cats. Many bengals come into a household and get along fine with other cats (and dogs). Some bengals do not. Bengals have huge personalities -- and they are all different. If you plan to get a bengal kitten, that may be easier to integrate than an adult bengal.
Bengals are social creatures. They love to be around their humans. They are highly vocal. This means they can yowl at the top of their lungs for no apparent reason. They have sweet dispositions. For having wild blood, they are very domestic. They have a lot of energy. You will need to play with them (wand toys especially) throughout the day. They will not sleep 20 hours day. A short nap and they are ready to become the Energizer bunny. They are adventurous -- not much scares them. They can be challenging. They do what they want. They can be easily trained to walk on a harness and leash. They need stimulation or they get bored easily.
They really are a beautiful breed of cat and the members here have a bengal for different reasons. Some also have other DSH and breeds in their household. My 11 year old bengal gets along for the most part with my 6 year old DSH, but they still tangle at times.
If you plan to get a bengal kitten, you will need to research breeders. There are many adult bengals in rescues and breeders, at times, have retired queens and studs available. These are usually posted on their websites or Facebook pages.
As long as you are prepared to invest your time in a bengal and you have the patience in introducing a new cat to your existing kitties, then this could work.