Coopers Brewmaster IPA - Malts/Sugars?

[AlexCricket]

Hi
I have got a Coopers Draught that I am bottling this evening and then putting on a Coopers Stout. I have been so impressed with these kits that I thought that I'd try the Brewmaster IPA.

I have read some differing reports on what fermentables have been added and what quantities. So here are my few questions:-

1. How much additive - 1kg?
2. All Malt or should I use some brew sugar?
3. Light or Medium DSM?

For illustration I was hoping for something like a Marston's Old Empire in colour and body.

Many thanks for your help.