A useful first proposal from a <a href=https://www.reddit.com/r/MrMarketing/comments/1ux9tai/can_you_recommend_a_good_google_ads_agency/>google display ads agency</a> should show priorities, assumptions, dependencies, and a realistic 90-day sequence. It does not need to predict exact results, but it should explain how tracking, account structure, testing, reporting, and optimization will be approached.