Question about DM with AMF (in General)

I have a question. I currently am using a solo UC tank with DM to help against killing myself vs GA people. I want to add a minion and have a AMF also. How much higher does my AMF have to be to still be useful when I have DM at the same time? Thanks for any help. Numbers in examples would be great.

If you have 10k DM (effect), you'd have to train AMF to 110k to have 100k AMF.

Above 80% of the level of you DM. In other words, above DM's effect.

"Yes, this means that you can have both Antimagic Field and DM, so long as your Antimagic Field is significantly higher - this is because DM will reduce your AMF level by an amount equivalent to its effect. So: Enchantment level - (DM level * 80%) = new enchantment level. That then converts into a new, lower effect. If it's zero or below, it will fizzle."

Unless you use a ROS, the effect from the DM takes away from the effect of the AMF.

IE DM: 100,000 (80,000) AMF: 1,000,000 (?) will give:
a DM of 80k vs your opponents ED spells and an AMF effect of 920k vs your opponents DD spells.

Thanks all for the quick responses.