Help with my minions (in General)

Hi guys :). I was wondering if i should do anything at all to max out my potential on my minions. I know buying the right armor for each minion is essential but that requires money and that will come later, but for now, is there anything i could do to improve? Thanks :).

Pay a trip to the armor store and then the blacksmith. You can get a surprisingly large amount of AC on your wall VERY cheap. The insane penalties really won't apply to your wall, so there's no reason not to. This will let you spend more money on your tank.

And you need to get more arrows.

I've also been suggested to change my AMF with DM and AB with EC. Would you guys recommend that?

AMF to DM wouldn't be a bad idea, but then you don't want EC. Anyway you can't trade off AS for EC, they're different spell types.