I ordered my Sunbrella bimini from GMI Top Design
http://www.gmitopdesign.com/ a couple of years ago and it has worked out well.
In fact, since we have the same boat, here is exactly what I ordered:
Length: 6 feet
Height: 40 '' to 46''
Width: 85 '' to 90 ''
Sunbrella Captain Navy #6046
1 adj support pole (pair)
1 SS hardware upgrade
2 quick release hinge
I have since added quick releases and shims to the side mounts as well, since the side mounts that came with the top were weak. There should be another post under accessories that will have more detail. If I can find the link, I will post.
Also, I created my own trailering legs out of additional materials. These provide a lot better stability when towing down the highway.
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-Rob.

Current boat: 2011 Yamaha AR210
Previous boat: 1998 Horizon RX 4.3GL SX