There is any form to make a working multiclass of that two classes? Because the background of my character is that he was a wizard aprentice but his master was brutally murdered and he decided to take revenge, unleashing his rage.
Numbers for the stats that I rolled:
20
17
20
10
9
18
And the characters start in level 2.
Please if you can tell me what school of magic can work and etc.
Thanks :)
Given that wizard and barbarian are tough to combine, I'd consider playing a magus.
Anyway, if you want to stick with it: Enchantment school helps to intimidate, divination school gives you always acting in surprise round and +1 initiative, and abjuration lets you pick up 5 points of energy resistance.
You could either go familiar for +3 hit points (toad / chicken), +4 initiative (e.g. rabbit) or +2 to one saving throw type (lots of options here). Alternatively bonded item gives you a masterwork weapon for free. Technically bonded items can be modified without the fitting feats, but you'd need enough wizard level for that. Magical Knack trait helps, but you need caster level 5 for the weapon and 7 for the ring.
There are a few valueable spells, even if you stick with wizard level 1: Shield, Disguise Self, Enlarge Person, Expeditious Retreat, Feather Fall and True Strike come to my mind. Arcane spell failure is a problem - if you want to avoid it completely, a mithril chain shirt and the Arcane Armor Training feat might be your best bet. Unequipping armor, casting and reequipping will sometimes work, but not always.
EDIT: Your stats look like 4d6 without ignoring a die - are you sure that's what your GM intended?
+1 to SheepishEidolon's suggestion.
Sounds like you want a gish class.
Things to note;
You can't cast while raging (yes even if you multiclass).
The prior point can be ignored by playing a bloodrager.
You know what, just play a bloodrager.
Sounds like your cup of tea.
Edit; Ninja'd. Dern longshanks.
Given that wizard and barbarian are tough to combine, I'd consider playing a magus.
Fighter (Viking archetype) / wizard, moving towards eldritch knight.
With the Furious Spell metamagic feat, you can cast spells prep w/ that while enraged, but it is still a pain in the arse, as even if you take it at 1st (which you can) that still means only your 0th spells can be cast while enraged, and they eat up your 1st level slots. Unless you are always casting before going enraged, a barbarian/wizard is going to be a hard one. Interesting concept, but annoying to make it work, alas.
Of course, you could take the Magical Lineage trait to let one spell you know ignore a +1 level mod, so you could have one spell you can prep as a Furious spell without eating up a higher slot.
Another option would be variant multi-classing. VMC Wizard is pretty weak in my opinion, but Barbarian isn't bad, so a Wizard with VMC Barbarian is playable. The biggest downside is you won't actually get rage until 3rd level.
With those stats though, even without rage and anything else, your wizard can beat up things fairly well, especially at low levels just with a quarter staff and nothing else. If you have a 20 INT and CON, 18 STR and 17 DEX you are fairly survivable in melee combat, likely having more HP, to hit and Damage than a lot of 3/4 BAB character with a more normal stat distribution. +5 to hit and 1d6 + 6 damage isn't horrible for level 2, and that is without feats or spell buffs to up that.
I'd probably go transmutation magic if it was me, but anything could work. The 'rage' will just be getting mad, not barbarian rage power until level 3, but you can certainly play that just as well.
Not sure if this fits your bill, but there's a feat called Mad Magic that lets u cast spells when you rage if you took the Moment of Clarity rage power