Hi Panzerd,
I'm new here! But I've been lurking a long time.
Seems as if most of your questions have been answered.
- For sweetness, body & mouth feel you could also use a lactose sugar - it's unfermentable. Another alternate in future would be to do a mini mash/partial mash just in a pot and use some liquid malt extract. This would yield maltier flavors and depending on which malt you use and how you use it you can wind up with a low level of fermentable sugars (higher mash temp for body and higher FG).
- I've never used one of the coopers kits you've got. Liquorcraft in Richmond/Oakliegh sell full beginners kits for around $110. Grain and Grape in Yarraville are around the same price. IMO from reading the coopers kit the quality of the kit from those two retailers is pretty good. Another alternate is an Ale Pail. RC Model in Clayton South are getting into homebrewing supplies (from RC Hobbies to brewing?!). They have Ale pail kits down there and will do you a good price if you ask for it (25L pail kit for $30-40, pail w/ tap + lid for $15-20)
- Cleaning/Sanitizing. I'd simply recommend Star-San for this. Grain and Grape in Yarraville sell 1L for $40. You use 1.5ml/L of water. This stuff is great. For actual cleaning a bit of scrubbing power never hurt anyone
- Temperature. I'd recommend picking up a heat pad if you want to produce ales. Lager yeasts ferment at lower temperatures and produce clean beers with little yeast character. Ale yeasts ferment at higher temperatures and produce beers with yeast character (fruitiness ect.). It really depends on what you want.
Hope all of this helps. If you ever want to get into AG or partial mash, I'd always recommend G&G for supplies.