Thanks man, just gotta remember the old phrase "**** happens". What you could try to do is this. 5'5= 65 inches. 5'10= 70 inches. Take the suit scale (Let's say it's 10) and divide by 65, then multiply by 70.
Desired Scale=Default Scale / Default Scale (inches) x Your height (inches).
You can find the default scale in Pepakura under "Recalculate Parts Layout" in the 2D menu I believe. This should get it closer to your scale, but you will still probably have to fine tune it and build some parts multiple times. Make sure to check the parts still fit on the paper!