oh, gorgeous, gorgeous!! that's one that I'd like to try... looks like the blooms are pretty large, too!
You probably know this, but I didn't know it with my first hoya... be sure not to knock off the little stub that forms with the bud/blooms... let the blossoms dry and just drop off... it will bloom again on the exact same little stubby thing. I'm pretty sure I knocked a few off and then wondered why I didn't get more blooms.
I really only have one hoya that blooms well, but it's been putting out another set of blooms every month or two! And my fishtail hoya just bloomed for the 2nd time -- 3 clusters this time, with these nifty deep ruby centers.