You can send a PM but I'll most likely not respond. Unless I am making a specific company recommendation, I want to post to the thread for others to have the chance to learn.
50k is about an average of 2k/hour so that will need to be your minimum limit. Most VPS accounts will allow that. The problem that you have is that you are most likely using content that will quickly trigger an alarm and have your account banned.
Either way, find a VPS that has cPanel and that's where I would start. $25-$40 will get you one. I'm not sure how much the dating niche pays, but you should be able to make your money back quickly.
Any idea what the conversion rates are? If you send to 50k, how likely is it that someone will purchase the service? Have you thought about promoting ClickBank products to targeted industry groups that can benefit from the mailing? Your content will be unique and most likely not get caught as fast.
You can easily find a list of florist and find a CB product "How to get more clients" and most likely make more that way. And if it works well for you, you can find other things that florist can benefit from and promote to them. Florist are usually small business owners and will be the one who checks emails and often the one who makes purchase decisions.
That's just a few thoughts. Someone will take the idea and run with it and if done right, they will make good money. I already use this technique but with another niche. By using the same industry each time, I can focus all of my efforts on growing my list and finding new products for them. Works like a charm!
Again, the advice above will make someone a lot of money if they employ it and fully develop it. Much more than dating unless you have the ability to send millions of emails a day/week.