So anytime you wonder about a material a quick search goes a long way.
https://community.glowforge.com/search?q=Sapele
Lots of sapele mentions, you should take a minute and scan them.
This in particular is relevant:
Then another quick search, if you haven’t seen them:
: Search results for 'Outdoor wood sign ' - Glowforge Owners Forum
There have been other discussions about this exact topic, they might be helpful.
Good luck!