You asked for a tip. My tip is to have your kiltmaker locate the tartan for you. Works for me. My kiltmaker knows the mills inside out. Finds the possible sources and lets me know. If there's more than one I just choose which. Point is, working with a reputable kiltmaker they can save you a LOT of hassle and confusion....assuming you're looking at wool and a hand sewn kilt.
Ol' Macdonald himself, a proud son of Skye and Cape Breton Island
Lifetime Member STA. Two time winner of Utilikiltarian of the Month.
"I'll have a kilt please, a nice hand sewn tartan, 16 ounce Strome. Oh, and a sporran on the side, with a strap please."