Welcome to GreyTalk! It's really good that you're researching & asking questions!
I had a grey for 8 years, but she died 5 years ago and I have not gotten another... mainly because I'm not home very often - away at work 9 hrs a day, then have other commitments on weekends sometimes & on some week nights. IF I got another grey, I would definitely cut back on those commitments to be fair to the dog. Just hasn't gotten to that point yet.
Dogs DO take a lot more time than cats (I have 2 cats). So keep thinking... if you can spend lots of time with your pup when you're not at work, and are willing to give up some things, then do consider it - they really are the BEST!