www.ecuagenera.com
Their main business in orchids, but if you click under "tropicals" you'll find that they also sell quite a bit of other plants. And if you ask them really nicely, they will grow or source plants just for you. Very reasonable prices, very healthy plants.
And a caution on Cocoa (Theobroma cacao) - it's a pretty tempremental tree to grow unless you have lots of bananas and can plant it under them (in the shade.) You might want to check elevation hardiness; I never see cacao here below 500 meters above sea level.