He doesn't really need pressure from the noseband as he doesn't gape his mouth open or try to evade the bit (which is what the noseband is supposed to prevent if adjusted tightly, yes?). So really, the noseband would be there for looks and just so he would get used to the feel because it would be adjusted very loosely.
Also, I just looked at the second bridle again and it only comes in horse size. We need oversize or warmblood size as he has a massive head.