Seems like you'll be fine with 10gR2. From the install docs
System Requirements
The following items are required for ODAC:
Windows operating system
32-bit: Windows 8 (Pro and Enterprise editions), Windows 7 (Professional, Enterprise, Ultimate editions), Windows Server 2008
x64: Windows 8 (Pro and Enterprise editions), Windows 7 (Professional, Enterprise, Ultimate editions), Windows Server 2012
(Standard, Datacenter, Essentials, and Foundation Editions), Windows
Server 2008 R2 and Windows Server 2008 (all editions, except HPC)
Access to an Oracle Database Server (Oracle 10g Release 2 or later)
Additional Notes on Requirements:
ODP.NET requires Microsoft .NET Framework.
ODP.NET, Managed Driver requires .NET Framework 4 or later up to .NET Framework 4.5
ODP.NET, Unmanaged Driver requires .NET Framework 3.5 SP 1 or later up to .NET Framework 4.5
Oracle Developer Tools for Visual Studio requires Microsoft Visual Studio 2010 or Visual Studio 2012.
Note: Visual Studio Express Editions are not supported with the Oracle Developer Tools. However, ODP.NET is supported with Visual Studio Express Edition.