You need to itemize your budget with breakdowns for advertising and promotions. Include any design, development for needed materials to facilitate the marketing. List the media outlets that will be used to execute your marketing plan and break out the online, social, e_mail marketing, e_brochures/e_catalogs, TV, print, radio, PR, tradeshows, sponsorships, philanthropic partnerships, direct_mail, telemarketing, and other outlets. I would also identify which components that will be completed in house and whether you will have an outside agency to help with your media buying and planning.
If you plan on taking advantage of the offer for a free marketing plan, then you need to know what you have to get together before you have the discovery meeting with your consultant. Your consultant will then create your free marketing plan that will include recommendations for what additional marketing services can help your business.