I’m not familiar with obfsproxy, I’ll look into that for sure.
You can run it on a Raspberry Pi together with OpenVPN. Then set it as the gateway for specific devices on your network as needed. If you do then make sure you overlock the Raspberry Pi to 1Ghz as it doubles the throughput. You should also add static routes for all Chinese netblocks to point to your normal default gateway – this ensures things like taobao, jd, weixin etc. don’t go through the VPN.