My advice is that as far as content goes you lock it up well and only use teaser not full non/action content to lure in your members. There is enough content on the web for those who what to see free full nude action content. You need to have content that makes people want to see more and you do that by having good content and not giving away everything.
Most software will work on most decent hosts, how every never go with an unlimited plan. They cap your resources that your script needs to handle the traffic. using wordpress is a good and cheap start. You don't have to spend tons of money on your site. If you content is good and your traffic is targeted you will see the cash coming. At that point you can start looking at upgrading your site.
As for hosting i can offer you a sharp package for 7 dollar a month, But as you will be hosting content i would suggest you order the 13 dollar (10gb SSD cloud, 1gbps 100gb bandwidth, cpanel free domain) hosting package. Of course you can always upgrade without down time.
https://diploy.net/hosting-pricing
Contact me on icq or mail at
[email protected] and i will give you 50% off on your first month.