i have 4 yorkies 2 i bred my self and 2 rescue yorkies, and i love it. will be moving in september and will be getting another one. its kind of pot luck to how your other ones will get on with it and how hard it will be to train, scampi was so easy and a lot of stuff he just kind of did his self without me even training him, then i got sasha when he was 5 and she was a bit of a madam to house train but got it in the end, then scampi and sasha had a one night stand lol and along came tye and zac which i kept and were a nightmare to train as they are a bit barkward due to a hard birth

it took 7 years to house train

then scampi died aged 15 so i only had 3 then 2 years later sasha died aged 12 so i only had 2 and i didnt like it so i got brandi my rescue yorkie and she got one with tye from the start but zac didnt like her, took him about 2 weeks to get to like her and now they have kisses, then i got annie another rescue and tye and zac got on with her from the start but brandi and her had a few fights but now love each other to bits. so its pot luck really if they will all get on and how hard it will be to train them, id say go for a rescue yorkie that way you will no if they will get on and house training is already done