Argus engines are good and cheap, I did read something about them being built in the same factory as Alpha but I have nothing to base that on apart from the comments I saw on another forum.
http://www.s-m-d.co.uk/argus-a52jp-4...set-i2756.html
About £170 / £180 comes with pipe.
You've got a charger, and Lipo's, you can use lipo's to power your starter box, rewire it with deans though.
You've probably already got servo's, although I know Jamie is selling one cheap, I was looking at it myself. Then you've just got smaller stuff like glow starter, fuel bottle and the like. As Jamie said, get yourself a used roller then buy what else you need, cheaper way to get into it. My Agama with a load of spares was only £175, I got an absolute bargain. Keep hunting the used sections for a Kyosho or which ever one you go for.