1. Golden Promise would be a "sweeter" flavor than pale malt (2-row/6-row)
2. Yes
3. There are numerous ways to make an amber and numerous different ambers. If you want to brew close to killians, you could probably find a clone.
Here are a few links that may help:
Golden Promise:
http://www.homebrewtalk.com/wiki/index.php/Golden_Promise
What needs mashed, steeped, etc: (I use this chart alot, good quick reference)
http://www.homebrewtalk.com/wiki/index.php/Malts_Chart
More on vienna, munich etc:
http://www.howtobrew.com/section2/chapter12-1.html
Irish red ales:
http://www.homebrewtalk.com/f65/
Here is a reference I use alot for on-line brewing info:
http://brewery.org/library/