You're loosing out on a load of damage without tornado, and a lot of range too.
Think about what spells and skills are most important to you when you're choosing your combo. I went for ninja>war>fire.
Tornado - You're not a fire without it.
Fog - I don't use it if I don't have to, only for killing people stronger than me or those with a lot of health/pots. If you two hit someone there's no need for fog. However, if there's someone you're only hitting like 400's on, you'll probably need fog to kill them.
Reflect - Saves your ass a lot, especially with those ninjas who sneak up on you while you're just sitting there and try to pull one of those left right left click shits.
Adv. Cure - Might be convenient occasionally, but not really useful in my opinion. I personally never heal while I'm fighting. If you need to heal during a fight, then you've already lost. When I'm zapping, all I do is pot, and only heal after my opponent is dead.
Magic shield (spell) - not super useful, but it can prevent you from getting one hit by someone who can only just one hit you, and can let you tank those pesky noobs that are hitting like 300's on you.
Magic shield (xp) - very useful, another little plus you get from going ninja>war>fire. This is probably my most commonly used xp skill.