A bike hitch on the front of the trailer is a interesting idea. I never thought of that before. You just have to remember that everything you add to the front adds to the tongue weight, 4 bikes and the rack might be more weight then you think. The one in the picture looks like you need to bring along a ladder to get the bikes on and off.
Model X19H Expandable
GMC Sierra Pick up
Been a camper since I was a kid, and that was a long time ago :)
From pup tents with no floors, to tents with floors and flies, to a pop up, to the expandable.