I naturally forgot about the whole blocker issue.
The 1.50, 1.50, 1, 1, 1 lower right might be possible as you said, but It's a bit hard to say with all the holes in that area. I'm going to gamble that it does support that, and in any case I can fall back to non-blocked 1.25, 1.25, 1, 1, 1.