Server Utilities :: Migrate 10gR2 To 11gR2 On Different Server

Here are the cards I've been dealt:

I've inherited a 10.2.0.1.0 instance running on a windows 2003 box; running fine, no problems other than system has been in production since 2005 and has gotten pretty old and tired. This old box has one tablespace on it... called "gateway".

I've installed 11.2.0.1 on a new (Windows 2008 R2 Enterprise 64-bit) server and created an empty database also called "gateway".

Now to move the data and views, objects, everything.

I've read up on a variety of migration techniques (oops, I mean "upgradation" LOL) and can follow the steps...

In short, I want to pull everything off of server a (10.2) and put it into production on server b (11.2). There seems to be quit a few options.

1. install 10.2 on my NEW server (server b), move the data over and get everything running, then install 11.2 and have it upgrade the database as part of the installation process.
2. drop the empty tablespace on server b, stop the database on server a, copy the files over from the old to the new home, run DBUA or set the compatibility attribute...
3. run some type of server a to server b utility that can bridge the two over the network. Some type of mirroring technique?
4. run file export scripts on server a, copy files to server b and run various import scripts

I tend to think that option 3 would be the best because both instances are in great health and are running right now. Is there a mechanism that allows the 11.2 instance to see and upgrade from a different server?