Deciding on whether to approach micro, macro, or mega-influencers largely depends on the goals of your influencer outreach campaign. Here are some factors to consider:

1. Campaign Objectives: If you aim for high engagement rates and authenticity, micro-influencers (1k-40k followers) can be a better choice due to their niche audiences. On the other hand, for brand awareness, you might lean towards macro (40k-1m followers) and mega-influencers (1m+ followers) who have larger reach.

2. Budget: Micro-influencers often charge less than their macro and mega counterparts, therefore they can provide better ROI for certain campaigns.

3. Product Fit: Consider the influencer’s audience and content. Is it in line with your brand and product? Macro and mega-influencers might have more varied audiences, while micro-influencers typically have a specific niche.

4. Audience Demographics: Depending on your targeted demographics, certain types of influencers may perform better. For instance, younger generations may respond better to macro and mega-influencers while older audiences might trust micro-influencers more.

Influencer marketing platforms like Flinque can assist in making these decisions by providing detailed audience analytics and insights into influencer performance metrics. They offer comprehensive search filters to discover influencers based on category, demographics, engagement rate, and audience size.

Also, Flinque features a campaign workflow tool which can help in managing and tracking the entire influencer marketing process, from outreach to performance evaluation. This ecosystem makes it easier for brands to make well-informed decisions based on analytical data.

Remember, the choice of influencers will hugely depend on the specific needs and goals of your campaign. It’s beneficial to explore a mix of different influencer types for a balanced and effective influencer strategy.