Bike hitch on back bumper

So I have been reading thread after thread on here on bike rack on back of TM bumper and have gotten most of my questions answered but just can't seem to find some loose end questions I have. I would like to carry at least 2 bikes perhaps upto 4. So here goes.

1. Does anyome know how much a hitch costs from the TM factory for a 2005 2720? This would be the bolt on hitch.

2. Any other recomendation for a good aftermarket bike hitch? Links would be helpful.

3. Any recomendations for hinged bike rack?

As an alternative to this option we are considering a swing away bike hitch on the TV ball mount using a 2" hitch split which would allow TM toeing and bike mount.

1. Since I have an automatic tongue lift in front and the typical two propane tanks does anyone know if a swing away bike mount will even clear? The rack I'm looking at is the mweracks.com

2. Will a 2" split hitch with a WDH even work? Is this allowed?