For SLA....I have provided a version that has already been hollowed, with drain holes, at 30% scale and supports added, it is what I used for my little blue print shown in the photos. It worked great with no issues, at .05 layers on the anycubic photon with Anti aliasing enabled it took about 3 and a half hours. While it is a lot of supports the print is successful which is the main thing, and despite the supports only takes about ten minutes to trim (pre cure), Just be careful on the wings at this scale they are very very thin and I would not recommend going any smaller in scale for this reason
For FFM....good luck and sorry, I wouldn't scale down too much as the wings will become problematic. Probably best to orient this on his feet as provided to hide supports and clean up, this is a challenging print to clean up no matter how you do it... If requested in the comments I will work on splitting this model to be easier to print.
