clubman with child?

Just think if we should buy a clubman and give away our current fzg, would save us about 1000 a year as I calculated…the question would be what that looks like with a small child (family planning starts so to speak)? is he suitable for that, is that enough? at the moment there is A3 sportback + ford ka, both I would knock out and want to exchange for a clubman diesel with everything that is nice and expensive? the audio stands at least 200 days a year only in the garage…im al ltag for shopping etc. does the ka also … therefore my idea only a “first car”..only A3 does not come into question, since the is not exactly the “savingst” city car (2.0T)