I'm looking for assistance with my website. I'm needing someone who can optimize my site for sales

I'm looking for assistance with my website. I'm needing someone who can optimize my site for sales. I want for my email responder to be able to retrieve abandoned carts, with incentives to buy such as discounts per x amount of emails to potential customers. Up sells to customers upon checkout for other items at a discounted rate but the discounted rate only shows up once and can only be used for specific items that have been added to the cart. I.E: if someone orders a Brazilian bikini then I want a Signature V String to be offered to them at an 85% discount as an add on or upsell. But if someone orders a Sports Bra I dont want a lace thong being available at all. Basically I want to have specific items to upsell or down sell for specific purchases. I would like to do promotional sales that offer free plus shipping, to where I can obtain sales thru the shipping cost but I originally offer my shipping cost at a cheaper rate than I would if I did a promotion of that caliber. I need assistance on how to make that type of promo work properly. I also use a WordPress plugin called FormCraft. I would like for the auto responder to be more faster than what it is currently is. (Maybe you can redirect it to come fron another webmail address like omnisend or mailchimp, instead of coming fron my wordpress admin ther way it does now).