If you have a spare bedroom where you can keep here during the introduction, as others have mentioned, this should work well. We recently did this when we introduced Tigerlily and Rajah to our 12-year-old cat, Eliza. Rajah and Lily were about 7 and 8 months old at the time, so very rambunctious in addition to being new on the block, so we wanted to introduce them slowly.
We are lucky enough to have a spare bedroom where we put lots of cat toys, a kitty tree, an extra littler box, etc. We placed two kitty beds on the bed for them, along with a fleece throw. Since we're gone at work all day, we left them in there while we were gone. Then we gradually started letting them out in the evening, a little bit at a time, so Eliza could get used to them. When it was time for bed, back into "their" room they went. We did this for about 2 weeks before letting them be out full time.
Doing this so gradually had a great bonus - we've left a spare food and water dish in that room along with their beds and a little box. Now, if they are driving us nuts at night (as one-year-old bengals will do!), we put them in there, and they quiet down and go to sleep! It's almost like crating a dog. Apparently, they thing of it as their safe, quiet place, and as long as they're in there together, they're happy. But if we only put one of them in there, they sit on each side of the door crying because they miss their buddy! It's so cute!
Good luck with the introduction - it should work out. Eliza still doesn't like the "kids" much, but they're all cohabitating fine, and things will continue to improve.