Ted Green and Dale Kloppenburg, two of the people of the group I went to Sulawesi with in 1994, have been so kind as to name one of the hoyas we found there after me. So, it is official, Hoya sp. GPS 8845 is now Hoya paulshirleyi. The article describing the plant can be found in Fraterna, the journal of the International Hoya Association. See here for the Fraterna website.
It is a fast growing species and very easy to flower, producing flowers in abundance. However, the individual flowers last only a day or so. The plant can take half sun, half shade and the leaves will colour red in the sun.

Hoya paulshirleyi