I think the main issue will be the little chihuahua if it barks at the bengal kitten because it's scared. I would introduce very slowly and set some ground rules for all the animals. Your kitten will also grow up to be much bigger than the chihuahua so you need to be the one tiring your kitten out and meeting the benga'ls hunting needs with da bird etc, so it does not think to start hunting the chihuahua
Get lots of high perches so the bengal feels safe and also you need to make sure your chihuahua is safe too when the bengal is fully grown and wanting to PLAY!!!! You will seriously have your hands full! Think you may need to watch lots of Jackson Galaxy and Cesar Millan