The requirements for inclusion in this ring are not very stringent. All that is required is that your site deal with spelling reform in one way or another. Your site need not even deal with spelling reform in English, provided you have at least some English-language material.
A suggestion, rather than a rule, for this ring is that its members provide content that is not about spelling reform per se. A popular science fiction review that just happens to be written in a reformed system will do more to spread the idea of reform than will a treatise on philology. The prerogative I reserve as ringmaster is to reject any site whose content would, in my opinion, reflect badly on the cause of spelling reform.
As for the system you use, that too is up to you. You may use your own, if you have one. You might also take a look at the Links from this page; they will connect you to online programs that will transliterate long texts into some existing systems.
The reform of English spelling is a very big project, so big that, as I write this, it is hard to see how it can ever succeed. Nevertheless, we know from the experience of other languages that it is possible. It will happen if enough of us make it happen.
Your site will be checked as soon as possible. If everything is okay, it will be entered in the ring. The system will also check back periodically to make sure your site is still there, with the code on it.