the biggest team advantage
is the joint bankroll allowing players to play much larger stakes than they would as individuals. Actual team plays are primarily done because the players don't trust each other to accurately report wins and losses when playing on their own. A team of honest player playing to a joint bank can make more money going their seperate ways and combining results than they can with spotting and big player strategies. The bigger casinos that take decent action are very good at making teams who use call in strategies. In many areas the higher limit tables are now all no mid-shoe entry. Some of the bigger, more successful teams of the past have all but given up on these tired strategies. There is also a huge difference in casino reaction when a team is made vs when an individual counter is made. The solo player is generally politely told, "no more 21". The team is usually 86d and escorted out by security with immediate flyes sent to surrounding casinos and reports to the Griffin agency.
I agree with MathProf's advice that you join greenchip and learn a great deal more about the game before you start with team play. If and when you do start your first team experiment I'd suggest much smaller stakes as your first few attempts will likely be failures but could give you some experience and give you an idea on the type of issues you will have to learn to handle, things you simply won't learn by reading books. Even advice from experienced players will only be meaningful when you have a foundation of playing experiences to which you can hypothetically apply the advice and see how it could help avoid some situations that you got into. I've made my living for the last six years playing and running successful teams. I had a few failing and semi-successful team ventures before that for smaller stakes. I'd also suggest you read all the Uston books you can as they are very accurate in familiarizing you with the actual life and many of the issues that arrise in team and other higher level play.
Unless you are a millionaire, I'd strongly advise against investing $100K in a team venture any time soon. By the time you are ready for that you would have sufficient contacts that putting together a group of skilled and experienced players would not be difficult.