Hello,
This is exactly what I do for my clients. I have been working these kinds of projects since 2007. I primarily work with WordPress and Infusionsoft (Keap), but I am flexible and the logic of the systems doesn't differ much from one app to another.
While I'm leaving the default "7 days" for project span, there is no true way to estimate the span of this project without knowing the number of campaigns needed, how many emails will be in each campaign, how many tags will be needed to track the various customers and choices, etc. I do charge $70/hour for my services and I provide detailed invoices to clarify how my time is spent.
I'm also known for having a phenomenal eye for appropriate imagery to use, if needed, on webpages and in emails.
I look forward to working with you.
In Liberty,
Denah Butts