Well, To say that you were unclear would be untrue to any degree.
Now heres what I will bring if your interested, I know I can do anything, not a question of learning UNLESS you throw something at me that is not what are are requesting, for example: write a php code that will execute such and such at a certain time, on the server, a problem I've recently encountered and do know how to do but used as an example here.
As for deadlines, If you give me a project that will take me 2 months, and you give me 2 days, you wont get an excuse, you will get me telling you straight forward the MINIMUM amount of time I will need to require this, I dont like excuses either but I will not be a person who promises what he cannot accomplish.
Payment upfront, No, I wouldnt ask for that. I do have that experience, I currently support about 4 cms' that use large databases. And know how to optimize and code in php that will DEFINATLEY meet your needs. There's a but to this as well. First Job, I will request within 1 week of beginning the project, a third of the agreed upon payment, That is so that I have the knowledge that you will pay me and not have me work on all this and not see a dime.
These are my requirements, I tell you this so you wont see anything unexpected.
I have the experience needed, the knowledge and have worked on many large database projects as well optimize code for php and so much more.
My e-mail is firstname.lastname@example.org
Darklord is my programming handle, has been for years.