Hello!
I understand you're looking for more than just a landing page designer; a partner in helping you develop whatever it is you may need. That would be my first question, though: what exactly in addition to a landing page designer are you looking for?
The skills you listed are all of the skills I have great knowledge in, and use everyday to help my other clientele with their projects. In other words, I'm very fluent in the languages you listed (PHP, SQL and HTML), and also use Photoshop to create, design, and slice website layouts and pages to convert to real, live, working websites (and pages).
Now, as far as the budget goes, I'm not COMPLETELY sure what I'm bidding on (since the partner part isn't exactly clear; unless it's just a partner in designing more than one landing page).
So, please, if you have any questions or wish to talk more about the project, just let me know!
I'll be awaiting your response!
Thank you,
Paul