Hey,
I gone through requirement and it looks like we can help each other. I setup more than 100 Email server in last 8 years for many clients, as I am new to freelancer but I am doing great outside this.
I can setup In house Email server with Power MTA and Mailwizz. mailwizz will work as frontend. Also I will setup all authentications like, SPF, DKIM, DMARC and FBLs.
Why I increased bid amount, because I will provide warm up plan, Blacklist IP details daily also I will request to De-list. At same time I will give you weekly report so that you can increase your reputation with all ISP like, Yahoo, GMAIL, Microsft domains.
My clients sends more than 3M emails daily. They have good reputation across all ISP.
Let me know if it works for you, I can show you demo as well. As it is dedicated server for every client so you can't send email as demo but you can see how emails are going in every minute.
Thanks,
Ashish Shukla
skype: ashishmca09