Hello, I'm new to the forum as well as a first time yorkie owner. Louie is a mix he's a "hybid" or "mutt" called a Shorkie = Shi Tzu x Yorkie. I have a few questions :
(1) I'm having a hard time housebreaking him, he prefers coming inside to pee on the wood floors

I have to chase him down when I want to take him out and wait for him to decide to potty and most the time he wont he just waits for me to give up and bring him inside were he pees on the floor. I'm assuming its harder because he was older when I bought him 4 months. Any advice recommendations will be VERY appreciated !
(2) He HATES the kennel he makes the most horrible noises when you put him in there ! It sounds like someones strangling him to death. What should I do ? Let him roam the house ? Let him cry ?
(3) Will his hair grow out ? Its really greasy looking and not to long about medium length does it get longer as he grows ? Also will he change color ? He's black and tan more black then tan but I've noticed yorkies change as they mature being a mix I would assume I'm just going to have to wait and see.
(4) I've heard putting yorkies under anistesa is dangerous true ? I want to have him neutered but have heard its dangerous and he could die while under.
(5) He's 18 weeks old and 4lbs how much longer will he grow ? What age will he be full grown ?
Any answers advice etc will be very much appreciated ! Thank you