Is my Wiz viable?

[Horatio]

I have not played in a very long time. Last time I played, level cap was 10?

I have a "battle mage". Uses heavy repeating crossbow a lot.
is this viable?

Fighter 1 Wiz 6 (ready to level up) Dwarven Male
str 10
dex 19
con 19
int 18
wis 10
cha 6
97 HP

28 action points ready to spend

feats

weapon focus ranged weapons
Tower shield
trip
sunder
spell save bonus
sneak
simple weapon
shield
rapid reload
quicken spell
point blank shot
orc and goblin
medium armor
poison save
martial weapon
magical training
light armor
inscribe wiz scroll
improved heroic durability
heroic durability
extend spell
exotic weapon
dwarven stonecunning
swarven stability
dismiss charm
defensive fighting
attack
arcane lore

+4 repeating heavy crossbow
+1 repeating heavy crossbow ghost touch enfeebling

[DirkTyrant]

a wizards spells are already a better dmg option for "ranged attacks" than any kind of xbow.... and you will want something else in your hands that augments your casting. If you just HAVE to shoot repeater xbows..... be an artificer - they cast spells, too.

[Monkey-Boy]

No.

[Enoach]

Currently just about any build can become viable (as in it can complete quests). There are some exceptions but even those can be forced to completion.

Now the actual question you should be looking at is what is my play style and how can I build to accommodate

Now as a Repeater build there are advantages for some classes.

Such as Artificer
1 Level grants you Rapid Reload and Repeater Feats
2 Gives you the ability to equip a Rune Arm - which even if not firing adds additional DPS as well as options

Based on this having 2 Artificer levels will not only save on feats but also give you an option to add a Rune Arm for additional benefits

Also the EK Tree in the Wizard will also allow you a single elemental stance for Acid/fire/cold/lightning which can also be added. However, much of the other tree is melee focus, but the Mage Armor and Shield enhancements can help improve defense.

Access to the Harper Tree could help by allowing you to use your Intelligence for To-Hit.

However, you could proceed with Wizard levels and in the end you will only be short the Capstone of the enhancements as well as one Spell Penetration.