There are multiple tools you can use
These should be good enough to start with
You should check out the just released features of Google+ hangouts ("hangouts with extras"). You get free video conferencing with multiple people, real-time shared documents editing, and a real-time shared sketchpad. If you can't collaborate in real-time because of time zones, you can still use shared google documents.
I would suggest HighRise for centralizing your emails to customers.
Basecamp for project management
you can start with a free (or cheap) account and scale up money comes...
I agree with Anurag,
Use remote desktop sharing software while dealing with few unreliable team and find someone reliable very soon.
I use skype email. You can use FTP to showcase work that has been done.