Half the flavours from CPA/CSA come from the yeast (both fermentation and being still in the beer). Buy 3 longies of CPA and culture up the yeast in a starter. You get to drink most of the beer too! The Cooper's yeast is the best improvement you will make to your beer. It'll ferment like crazy though so keep an eye on temps (I like 18C for Cooper's PA yeast).
Search the forum for the Brew In A Bag (BIAB) method of all grain brewing. I'm in a similar situation, currently living in a two bedroom apartment but this method allows me to make much better beer and boil the full wort so hop additions are easy.
Search the forum for the Brew In A Bag (BIAB) method of all grain brewing. I'm in a similar situation, currently living in a two bedroom apartment but this method allows me to make much better beer and boil the full wort so hop additions are easy.