Dear Sir,
I have read your Project Description & understand the overall requirements, so let me formally confirm you that technically there are no hurdles but as far as your question is concerned, we can use Joomla, because custom coding will definitely take time. If we consider Joomla, then our estimate is higher than US $3,000, so would you be flexible in it?
Please drop me a message thru' Freelancer PMB, if you are flexible in your budget, I can then also answer to your other questions.
Just so you know, our current bid is just a placeholder to submit the proposal & start our communication.
Look forward to hearing from you.
Regards,
YK
LEADconcept