To be blunt, you're making this hard on yourself and expensive.
Retrax Pro XR
Add crossbars for RTT
Hitch carrier for the bike.
BTDT, pulling racks off and on is a pain in the butt. The truck is always in the wrong configuration when something fun or profitable comes up. The setup above gives you lower overall height, better fuel economy, and loading a bike UNDER the RTT is about the least fun thing I can think of after a long day of riding (not to mention if you're even slightly hurt).
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I agree with this. I just installed the Retrax Pro XR (which accept's Yakima, Thule, and other similar accessories) on my truck. I'll be adding Yakima's OverHaul HD adjustable racks so I have some options when it comes to crossbar height.