Two brews complete...where to expand my abilities?

cafelinhchi

hi, all. I brewed my second batch yesterday--an all extract hefe. I've got the basic extract w/steeping grains routine down, I believe. I have my basic starter kit and a 5 gallon SS kettle. What area can I expand to get the most improvement and enjoyment from brewing?

Here are my thoughts...

7 cu ft fermentation chamber: I have a spare bathroom where my fermenters sit in a tub of water covered with t-shirts. I live in AZ and 100+ heat is quickly approaching. I usually keep my AC set around 84. I don't think I can get away with swamp cooling through the heat of summer.

Kegging setup: I've only bottled once and I already know I'd rather keg.

20 gallon kettle and propane burner: I'd like to move to full batch boils. I know 20 is a big step, but I eventually want to do 10 gallon all-grain like my friends so I figure buy once and get it over with.