You definitely need a Wide model board becasue of your size 13 feet, probably in the 150-154 size. Tall and skinny with big feet is harder to find the apropriate size for because wide boards are generally made for big heavy dudes. More body weight means you need a longer board to maintain stability at speed and when landing jumps. So you need a relatively short wide board.
Im not sure what brand you have access too or if you will be buying in the US when you get here.
If you can find a GNU Carbon Credit or Lib tech skate banana in 153W that would work. Or maybe find a Rome Agent Rocker 154W on sale that would work well and be a huge upgrade.
Dude, suckin at somethin' is just the first step to bein' sorta good at somethin'