Kayla Itsines anyone?

Hi everybody and a happy new year to you all!

Im considering purchasing the Kayla Itsines package- I'm 5'9 and currently weigh 11st 7, in hoping to lose just under two stone. I was wondering if anybody had any experience of using Kayla Itsine? I'm hoping to do it at home but I'm just wondering how much space you would need to do it at home? I do not have a garden and I have very limited space in my house- a small living room. I'm thinking I may have to join the gym and use the equipment there.

Any advice would be greatly appreciated!