Mike likes Calibrated boards for a reason, they took him to the Men's Am Championship at the World's this year (congrats again Mike), however...they aren't available at retail for those of us that aren't a sponsored rider.
Eventually the Calibrated's will be at the top of the heap for skim style boards.
The truth is that at your size and at this time, you only have two true options in skim style boards. One is the Phase 5 Oogle the other is a semi-custom board from the folks at Walzer. Of the two, the Walzer is a better quality ride. AND they'll fit it to you.
I have to tell you though, the Oogle is 4'10" and if your struggling with the Broadcast or the Ride, you'll no doubt struggle with either of these skimstyle boards.
Have you thought about getting your wakesurf legs under you with a larger more surfstyle board? Then after you become more proficient getting the skimstyle board that you really want? Or possibly a more hybrid model like Inland's Yellow or a Trick Boardz Mojo (I think the XL is the correct size for you) ?