Kittens too young to have run of house?

I am taking home two Siamese kittens from their breeder next weekend. The little girl, Freya is now 11.5 weeks. The little boy, Magnus, is 15 weeks.

Magnus is the largest in his litter, he's about 3.5 pounds. I'm not so worried about him. But Freya is little. She's about 2 pounds, very tiny. I also have 4 other cats. Regardless of the typical cat interaction process (I typically take a long time - exchange smells, allow them to see each other behind a glass door, exchange rooms, etc), these two kittens seem really small to be allowed free roam of my house.

For background, I have a 3,000 square foot house with 4 bedrooms, 3.5 baths, 6 cat trees, and 7 litter boxes. Magnus had some issues with litter box habits initially and is now on track. I would prefer to supervise their roam while I'm home and confine them in the library while I'm at work until they're bigger.

Am I just being paranoid? I did the same thing with my ragdolls and everyone though I was nuts.

I would confine them both for a week until they are used to you and your home, then leave them out only when you're at home, but back in the room at night for a week. Then they should be able to have run of the house.

If you have a process that works for you then you are not nuts...

Sounds to me like you have a natural gift with cats...im sure you will be puurrrfect

I don't think you're "nuts" at all!

I brought two kittens home a few years ago (also Siamese, incidentally), and even though I had no other cats in the house, I confined them for the first week or so in the evenings and when we were not at home. They were, understandably, quite unsettled by their new environment at first, and one of them in particular was very shy. I think having their own "safe room" was comforting for them until they were used to their new surroundings. (I also think cats can get "lost" in a big space they're not used to. Even as an adult, one of mine cried in the night for a few days after we moved into our new house.)

No you're not nuts. My kitten only gets free roam in certain rooms and only when I'm home. At night and when I'm gone he stays in my bedroom

I think you are a natural when it comes to cats needs. I love Siamese also, I have one at home along with a tabby.