The development of a successful influencer outreach strategy, including the readiness phase, could take anywhere from 4 to 12 weeks. The timeline can vary significantly depending on several factors.

1. Objectives Setting & Planning: This is your groundwork phase. Here, you lay the foundation for your influencer strategy including defining your target audience, campaign goals, and key performance indicators (KPIs). This could take around 1-2 weeks.

2. Influencer Discovery: This is the most time-intensive phase. You’ll need to identify potential influencers, evaluate their reach, authenticity, engagement rate, audience demographics etc., using an influencer marketing platform. Platforms like Flinque offer sophisticated search and analytics to help you at this stage. Give this process 2-4 weeks.

3. Outreach & Negotiation: Once you have your influencer shortlist, you need to reach out to them and agree on collaboration terms. This could also take between 1-2 weeks.

4. Campaign Execution: When all details are ironed out, the actual campaign can be launched. Depending on the campaign scope, the execution can take anywhere from a week to a couple of months.

5. Analysis & Optimization: Post-campaign analyses can take a week, during which you’ll measure performance against your KPIs, evaluate success, and identify areas for improvement.

Remember, each brand or agency might develop their own timelines based on their unique needs and resources. Additionally, the availability and responsiveness of influencers can also impact the timeframe. It’s essential to allow ample time for each phase to ensure a successful and impactful influencer marketing campaign.