I'll write you a full guide on what i reccomend you should do.
Hosting:
For your hosting i would reccomend that you start off with a small package as you will not need the space / bandwidth if you are just starting out with your website. A hosting package no more than $10 would definately be more than enough for your site and when needed you can always upgrade.
What script to run your website with:
First off what you have to decide is are you going to start a community or a personal blog? I personally like to use Wordpress, this is because i like to have full control of my website and not let people sign up & spam or add topics with virus's etc.
Theme:
Always try to get a theme that no one else is using on a big website, it never looks good when you have other people telling you that you are trying to copy another website, ofcourse you can always get one custom made for you or if you dont have the money you can just get a theme and then customise it yourself like alot of people.
Take your time:
Always remember that you are in no rush !!
Take your time with your site, make sure it is going to be what you want it to be like and dont start publishing posts until you are satisfied with the way it looks.
SEO:
Search Engine Optimization is definately something i can't help you much with. I am not very good at this part, what i d know is that you will want to try and get as much backlinks and adspots on as many high PR forums as possible. This will ensure that you are getting people coming from other sites with alot of visitors and will hopefully thats to bring them back each time when you are posting new content. Make sure you have it perfect or as close as you can to it before you start to publish, i made this mistake and regret it.
Where to get your warez from:
I would reccomend to start off with places such as RlsLog & OneDDL
These are two of the best sites in my opinion, apart from private trackers ofcourse. Make sure you have not got any other sites information inside the RAR files when you re upload as it will just promoote other sites to the one you have downloaded from.
Obviously dont just keep taking the content from they site as it will just basically be a rip verion of them, try and go to other sites or look on katz and see what people have not submitted much of then publish that.
Files being deleted:
Sorry but i am not sure about this one, no one can be certain what will be deleted.
Try changing the MD%'s of the files and also the names of the file inside the rar and the rar filename itself.
Something completely different to what you are actually posting as new things will always get deleted, it is simple to see what files are on a server because they can just do a serach and then if you have a certain thing in your filename it will come and and be deleted along with a whole bunch of other links
I aint really sure if this will help you but hopfully yu get a little advice rom it, i know people will probably say im wrong on most bits but it is my opinion and everyone is entitled to there own.
Good luck with your site anyways, hope to see it grow later on in the many months.