Yes, the 911 will give you the performance you need. You could use a 2083 which is a 9" pitch instead of the 10.5" of the 911 prop if you are into surfing but it won't be useful if you ever run at lower elevations. Your top speed with the 911 is low 40's and it would be high 30's with the 2083.
At 6000 feet you are down over 20% on power. The 911 gives you that back through torque multiplication.
I use the 911 on my D215 at altitudes of 1600' and 3000'. It did not decrease my top speed compared to my 515 12" pitch prop as I could not use more of the RPM range on my 330 Scorpion.
Call Acme if you want. They listen and usually come up with a good selection.