I'll have to have you over sometime招待する

have a lot on ： やることがたくさんある
have someone over ： 招待する
set up [something]／set [something] up ： セッティングする、整理する

Emma:Hi, Jack! How've you been?

Jack:Pretty busy! I've got a lot on at the moment.

Emma:I heard you moved house recently.

Jack:That's right. I just moved in to a new apartment in Kichijoji.

Emma:That's a great area

Jack:Yeah, I really like it. I'll have to have you over sometime, after I've got the apartment set up.

Emma:Sounds great