A marketing team is planning to enhance their email list-building strategy for a new product launch. They have identified three primary channels for gathering email addresses: social media campaigns, website sign-up forms, and in-person events. If the team aims to collect at least 1,000 email addresses within the first month, they estimate that social media campaigns will yield an average of 5% conversion from impressions, website sign-up forms will convert at 10%, and in-person events will convert at 15%. If they plan to allocate their efforts as follows: 60% of their resources to social media, 30% to website forms, and 10% to in-person events, how many impressions do they need to achieve their goal, assuming they expect to host 5 in-person events with an average attendance of 100 people each?