<p>I am happy to finally report that after uncounted tries with a couple triple gem dragons and then 49 tries with Aphrodite x Laserlight, I have a 44 hr breeding time. :) I have the habitat building now in preparation.
</p><p>My choice of Aphrodite x Laserlight was a combination of misguided advice and logic. I obtained Aphrodite out of luck with the Spin to Win wheel, so I know most people won't have it. Seeing the combination in the breeding calculator gave me 9 options, I was misguided by others' advice that chances would be high with fewer options (incorrect decuction). HOWEVER, out of the 9 possibilities, the fail time for the most frequent common (Love) is only 5 hours. So I kept with it, dealing with the longer fail times of other dragons and trading them all for gems & large gems since the most common one was fast.
</p><p>In the end, my percentages on 49 tries with this combo. I know this won't be the same for everyone, but it can give others an idea that it is about persistance and luck:
</p><p>Common: 42.86%, Rare: 42.86%, Super Rare: 12.24%, Ultra Rare: 2.04%
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