Thinking About Getting An Italian Greyhound?

I currently have a 5 month old male Chihuahua, he is fully vaccinated and set to be neutered within a month. He is great, 99.9% housebroken, knows some commands, is less bark-y than most chihuahuas and loves people and other animals. I have been thinking about getting a second dog. Another chihuahua is what I will most likely get, but I have also always loved Italian Greyhounds. My chihuahua will be about 5lb when he’s finished growing, so I know the Italian Greyhound would be bigger than him, but I don’t think that will be an issue.
My question is what are the main differences between the two? I don’t just want googled answers, I have done a lot of research, I want more first-hand experience if possible. I have read that IGs don’t like cold weather, rain, can be hyper and fragile, and are very hard to house train. However, I have heard most of that about chihuahuas, too, and have found that I haven’t had many problems. If I have been fine with a chihuahua, should I expect a tougher time with an IG still? Or should I be fine?

I’m Thinking Of Getting A Dog And I Have 2 Cats-what Breeds Would Suit My Lifestyle?

busy life with 3 kids and 2 cats. Love whippets,greyhounds,red setters and dalmations-which do you think is appropriate. able to go walking loads-one of my children is a very small baby-needs advice on poopy training and diet to if you can help-thanks loads-x

Thinking About Gettin A Italian Greyhound But Should I Train It To Use A Pee Pad?

So i have been researching majorly what breed of dog should i get. I already have a 1yr old rescued toy poodle that we got as a puppy. And the breed that sounds like it would fit me well also that i love is the italian greyhound. But they dont like cold weather. I live in upper IL and it is nice and warm in the summer and spring and even fall sometimes, but sometimes ( not to often but often enough) it can get below zero during the harsh winters. My poodle (who has only every had 3 accidents and 2 times were my fault and we got him a a 8week old puppy not potty trained) he even refused to go out one day and he had a fluffy coat and a jacket.But i am not going to unteach him how to use a bell to tell us when he has to go outside just to teach him to use a pee pad. But if i am thinking about rescuing a puppy italian greyhound should i train that dog to go on the pee pad or would that confuse my dog then he would start going inside where ever. I would fore sure buy jackets for the IG just as i did for my dog. But will that be enough.
Also since my dog is a male (dont worry he is neutered) should i get a female IG.