good to be honest. seems to me you are not ready yet.
you need to put these factors together before you take off:
your life style
your knowledge to dogs;
your $
the attitude of the people living with you
if you are convinced that any of these above is premature, you may, very posiblly, be sitting into a deep shit. you won't disagree with this if you've notice so many pets being abondoned by some spring chickens.