Tshirt sizing/What brand name Tshirts will be used? (Now with even more information)

After doing a fair bit of searching, I found this site http://www.cafepress.com/mf/33437935/phantbm_tshirt ,which has jinx shirts for sale and actually lists shirt length (unlike the actual jinx site). So I chose a size: Large after measuring one of my shirts which fit me well which was 28" in length or height (distance from bottom to top). The size large is listed as 30" long.

I think the listed length of 30" (which the large is listed as having) should be plenty long enough, as long as that site is accurate for jinx shirt sizing (Which is great if it is, because larges are often too short on me, while XL are too wide)!