Greetings,
I am an Australian designer of some years experience. Having read your brief, and considering the applications of the logo you have mentioned, I feel that a good strong graphic element and clean typeface would be a good direction for the logo. The graphic element, a symbol of some sort that embodies the ethos component of your name, could work well as a watermark on it's own or with the typeface. Rest assured that any design I create for you will be original, created specifically for you, tailored to your tastes, and not some cheap design utilising free vectors found on the internet. The design I create for you will work well in all applications you desire; social media, watermark, business cards, and/or letterheads.
Please feel free to take a look at my Freelancer portfolio to get an idea of what I can do for you, however my portfolio here is somewhat random so I can cast a wider net for potential clients. If you wanted to get in contact with me I would be able to send you more specific samples of my work, and also discuss ideas further with you.
Good luck with your project, and future endeavours. I wish you all the best.
Regards,
Joshua