I think that I will play as the Junia; having good public order bonuses and agricultural buffs should help me build an efficient economic base. I plan to try to preserve the Republic and its ideals, conferring no preference to my family members, but only honoring those who are qualified and worthy, and I hope to ease tensions between the patricians and the plebs. ( I may RP a bit where I only play battles that my family is involved in, but idk about that quite yet).
I plan to aggressively attack the Etruscans early on, finishing them off so that I can have the province of Italia. From there, I intend to remain relatively peaceful and build my economy, not "starting" wars per se, but propping up those who would ally with me and using agents to detract from my foes. In this way, war will likely break out with the Cisalpine Gauls or the Ligurians; in the event of this I intend to ally with the Veneti (supposed shared Trojan ancestry with the Romans, so maybe there's an affinity there

).
I may also become entangled with the Carthaginians over Syracuse/ Sicily, in which case things will likely play out quite like the Punic Wars IRL. From there, it seems I may get dragged into conflict in Illyria or Greece (roughly like real Roman history).
I suppose in summary, I intend to have a relatively conservative foreign policy, although I will be doing much "meddling" in the affairs of other nations with my coin and my agents (as far as the agents go, I don't wish to do anything dishonorable like assassination

). I want to win allies over with good will and just policies, and intend to treat them fairly and protect them faithfully.