I think you would be better off selling that tire carrier and getting a bumper with both swing arms. You can sell that tire carrier for $600-$700 and put it towards the cost of the full bumper which is $2,750 or net about $2,100.
The bumper without swingarms is $1,750, but to add a passenger swing arm would probably be ~$600+, so $2,350 total.
2005 E350 Chateau - V10 - Agile Offroad 4x4
2012 CTS-V Wagon - For the baby...