ORIGINAL: Stick40
E flite has a really nice way of easly comparing glow to electric engines. [link=http://www.horizonhobby.com/Products/Default.aspx?ProdID=EFLM4025A]E flite 25[/link] motor is here. Here is the [link=http://www.horizonhobby.com/Products/Default.aspx?ProdID=EFLA1040]ESC[/link]. Heres the [link=http://www.horizonhobby.com/Products/Default.aspx?ProdID=EFLB21003S]battery.[/link]
Stick 40
The battery you linked to is a 2100 mah 3-s lipo. For a .25, I would go to 3850 or 4200 mah unless you want short flights and really hot batteries when you land.
You can also take note of the Power 25 specs and buy a AXI or Rimfire outrunner that closely matches those specs. The Kv rating and amp rating are the specs you need to match.