Anyone have any tips?

When I first got the game, that was the first thing I tried because you could cast in one hand, with a weapon in the other.

It wasn't very effective though, if I was using a channeled spell, my weapons attacks were extremely slow. I wanted to also try (if anyone plays World of Warcraft) a Deathknight, using Frost magic and Conjuration with a 2-handed weapon. But I think it would be annoying switching back and forth between your spell you cast a couple times, then back to your weapon.

It seems like it would be hard to balance my stats too, if I'm melee a lot, I would need lots of Health for taking hits, and Stamina for some Power attacks, but I would also need lots of Magicka....

There was a good discussion just the other day in an existing thread.

Look here...http://www.gamesas.com/topic/1450994-battlemage/

1.9 patch will probbably become a great friend of yours

I just started a battlemage for a legendary playthrough.

I roughly plan my characters ahead using http://skyrimcalculator.com/ and then tend to let them grow depending on what I really use so it's not all set in stone from the beginning.

When I started planning, I initially came up with something quite similar to your plan:
- Breton
- Double handed axe for melee, destruction magic for range (I prefer lightning since fire and frost travel too slow for my taste and I tend to consider spellcasters especially nasty on higher levels.
- Conjuration (I prefer Atronachs/Daedra over Undead) and for bound weapons until I get my smithing and enchanting up high enough for decent weapons.
- Restoration for tanking purposes along with
- Heavy Armor
- Smithing and Enchanting as crafting skills - imho that's pretty much mandatory for a battlemage

So here's how it turned out (lvl 18 so far):

- Right when I started playing, I realized that constantly switching back and forth between a two-hander and spells would be incredibly annoying so went one-handed instead.
- So far, Conjuration and One-handed level the fastest (mostly using the steed stone except when enchanting or smithing) since I find myself constantly using an atronach and a bound sword. The Atronach is really a livesaver on legendary since its damage and tanking capabilities are unaffected by legendary difficulty.
- Destruction is stuck at a pretty low level (17, I think) since I constantly have to heal myself due to the insane damage I get on Legendary, so Restoration is way higher.
- Right now, I'm thinking about ditching destruction altogether, because to use it remotely effectively, I'll need impact which requres me to dualcast, so I'd end up discontinuing to use one-handed weapons since I'd just use destruction (I know myself ).
- Instead I think I'm going to add Alteration - transmutation will help me level my smithing faster and since I observed a nasty tendency to get one-shotted on Legendary, I can use the additional magic resistance and tank with paralysis as a cherry on top.

Stat-wise, I put everything in magic and health with about 30% more in magic - it allows me to active-tank quite comfortably. I don't think I'll go beyond 100 in stamina - the steed stone allows me to carry quite a bit and I don't need it for power-attacks since I always eat vegetable soup .

Hope that helps, although most of my decicions are based on the decision to play on legendary.

I actually favor the 2H over the 1H. If you hotkey the 2H then equip two spells, either two different ones or set up for Dual Casting, you only need to hit the 2H hotkey to toggle between them. That, for me, is a lot smoother transition form weapon to spell.