I load extra lite with 7/8oz shot, since I load for about 1200fps I can use the "suggested wad" but if I were loading for higher velocity (using more powder) I would have to use a shorter wad. Extra lite is a bulky powder, learn to adjust wads to make the stack height correct.
I love the powder, havent tried it with 1 oz loads yet, but with 7/8oz its a clear winner for me, (very clean burn) and economical.
So yes, try the 1oz wads, might just do the trick.