Assist me with Bulk Marketing

Hi, I know how to do this myself - I work in marketing but have too much going on. I want to send an e-newsletter out to my customer list which is sync with my online booking system. I have a beauty salon which offers several key services. We are going to shortly be moving into new premises - we cant confirm this in the newsletter but can allude to it to make a buzz. Another topic is we now have more appointments during office hours - - increased availabililty during the week. Finally I wanted to send an "offer" but ony to those customers who had a high customer spend but have been absent for some time. A "we miss you" theme offer which offers "Lash Cash" and translates to dollars off an eyelash extensions service but only valid prior to noon on Monday, Tuesday & WEdnesday during September. . As I said I am very busy so dont have the time to sit through and go through it step sby step. Just want a clean modern enewsletter template. I will give you my websites, instagram and facebook to get some images and also happy to use stock images if they are suitable. Want you to set it all u pfor me within my mailchimp but i want to be able to go in and view myself, edit and reuse if required. If this could happen in 21 hours it would be great.