You need to get the Hotdoggers idea out of your head.
At least get those fitted, if they don't fit properly, you'll have much worse pain than shinbang.
Also, like I said, don't get the Hotdoggers if they fit, get the Seth, better buckles, stiffer tongue (better for someone your size). No cheap plastic buckles and a soft ass tongue.
Go get fitted, and stop landing back seat.