I have 2.
But I was advised to wait until the first yorkie was fully trained in every way. And so we did. And I am very thankful we did, because the first one took nearly a year to get potty trained and the new pup is now close to 6 months and almost trained! Kali will come to me when she thinks Mare needs to go out and I can let them out to avoid accidents. Now Mare sits at the door if she needs to go, so if I don't see it, it's my own fault
Kali has taught Mare so many things - going down stairs for example, we taught Kali and she taught Mare. Also to come when we call them.
The downside is that Mare doesn't know her name and will respoond to Kalis. But we plan on giving Kali a vacation with her uncle (my brother in law) for a week and train her during that week.
So it'll all be good
I can't say what is right for you, all I can say is that because we waited it was MUCH less of a hassle with Mare.
I bought myself a bicyclebasket:
http://loppetjansen.dk/product_info....oducts_id=1007 and that is cool, I can take the girls everywhere with me. Skagen is so small you don't need a car, we mostly go by bicycle