Senegals tend to be a 'one owner' parrot, and can be tempermental.
Safari came to me at 7 months of age, incredibly tame, and is an all around suck, but only on his terms, not mine.
They can amuse them selves extremely well, they are not loud, and are super smart.
They are known to copy many different sounds, which I love.
They do not care for other birds and will bite them if given the chance. It took Safari about 4-5 months to finally get it thru his thick head that he didn't have to attack them.
now he allows bird in his cage while he is in there, something I thought would never happen, but again only on his terms.
since you have other birds you should take that into consideration.