Welcome to Carthage!
There wasn't much of an archery tradition in the Western Mediterranean of this period. Greeks were rather conflicted about it. Persians employed it to a great degree. The relative neglect of archery may have something to do with different notions of heroic personal combat, especially amongst the Iberians, Celts, Greeks and Romans.
The Carthaginians may have felt likewise, but they probably had a different notion of heroism since they usually got others to do their fighting for them.
The Carthaginians of the Second Punic War hardly used archers. The one battle where archers appear to have been used was Zama where Moorish archers served on the Carthaginian side. There would have been very few present.
Cretan archers in this period were known to be in the employ of Carthage's rival Syracuse, who loaned some to Rome for use against Hannibal.
Iberians (today's Spanish) weren't much known for archery, more for javelin, spear and sling.
The principal missile weapon of this period was the javelin. Javelineers of various types would be fielded in the thousands. Ordinary line infantry would often use javelins before closing for melee. Cavalry would often be armed with javelins.
Next to this, Hannibal probably had no more than 1,000 Balearic slingers, probably more like 500 or so. This would translate to one or at most two units in most 28mm systems.
If you've bought Victrix's 'Warriors of Carthage' box then the Libyan javelineers in the box will serve you well.
Since you're embarking on a Carthaginian project I would highly recommend Duncan Head's Armies of the Macedonian and Punic Wars. It's now back in print and provides tonnes of information about the troop types, tactics, and appearance. It's been a big influence on the Victrix range.
I've also starting on a Punic Wars project using Victrix and others. You may find some of the stuff I've posted on my blog helpful:
etherdrakecave.blogspot.my