Each dog is unique of course and has its own temperament. If you don’t have a lot of room then perhaps a certain breed who needs a lot of exercise is a bad idea. If you already have a dog (or dogs) will a new addition be a positive or a negative and what breed would be best to acclimate with the pack if that is your concern.
Why not give Dennis Danskin noted Las Vegas Valley dog trainer a call and ask a question or two before you decide what to do next? He will “shoot you straight” about your thoughts. When you are ready to adopt give Dennis another call at (702) 327-4744 and go to the internet and google trainhumane.net.