The best strategy for the double wave is to try to match up your units best you can with both waves, only setting yourself up for one wave can be critical. They always seem to do the trick for me in any age. Now If you were to get PME units I would go with Heavies, Ranged and Art.

Since my units are all older aged they go last in the attack sequence, you will also have better luck ith this since you have ME units. Most of this is due to rotation of attack and some range of the higher aged units, not particularly what units or my boosts. Now I have started to run into some issues on some provinces, mostly where the actual PME units start.

So better starting attributes for ME with less boost compared to units at PE with higher % is about a wash in my book.

You say you have a 57% attack and ME units now? I think you will be fine for the most part, I am at 72% myself and have easily walked through half of the PME map with only PE units. I just started the PME map recently as well so I will jump in.

Forge of empires military strategy