keeping a siamese kitten in an apartment??

by new pet owner
(WA)

hi, i have never kept any pets before- only have had a betta fish for the past 3 months and i am really eager to have a cat too. i am single and live in a 1 bedroom apartment on the fourth floor of a high rise block of flats. could you help me with some basic advise??.... is it very expensive? will the kitten be missing out on outside life? do i need to carry it and go for a walk or would a basket do or do i not have to take it out at all?? would it try and escape and even jump off my balcony?? would another breed of cat be better indoor in an apartment than a siamese? and wold a kitten be better than an adult/ young adult cat? cheers. P.