What's the recommended difficulty for a game with DAIM?

[Friedericus Rex]

Hi; I'm thinking about downloading your mod and wanted to know for what diff level it is intented, ie. is it so hardcore that "normal" will be enough of a challange?
I usually play games on the standart level, but after winning rather easily I decided to play a game as SU on VH and it looks like I'm getting my ass kicked.
Also, playing as Germany, will the Allies invade, in force? Are those invasions scripted events, or real gameplay efforts by the AI?

 

[e-stab]

Playing as a major I usually use 'hard' difficulty. Sometimes the Allies do good invasions, sometimes they don't. They don't get any help for them.