I need help setting up my characters skill set for a battlemage character. I wanna use the enchant skill to make a full heavy armor set that boosts my magicka but don't how powerful a magicka boost enchant can be due to my low skill at the moment. My enchant for that caps out at a boost of twenty. So how high can that go and would it be best for me to boost magicka or make it to were spells cost less. All I use is destruction and conjurgation.

If you only use destruction and conjuration, from a technical standpoint, I'd tell you that spells costing less is the better enchantment, as it is possible to make spells from both those schools cost zero magika with 100 enchanting and the appropriate perks. Though, this will make many battles VERY easy, so approach the issue as you see fit. I'm not sure with the magika boost enchantment, as I generally don't use them.

What perks do you use?

Forgot I also use restoration