Even though it is perfectly acceptable and is a common practice to use the 8_stage classic model for the e_marketing plan as well, you might want to consider the simplified version proposed by Chaffey, who identifies four major steps to build the e_marketing plan:
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.