Ok, all done!
1st 2 show the fitment of a PCI bracket, spot on!
2nd 2 show before and after supports removed.
So here are my thoughts, I would not print sideways, layering is pretty bad, but if you are good at tweaking your pinter, can over come that. However the text came out great! If you have a lot of patience, vertical would look great if you are willing to sand.
As I suspected, the face down doesn't look so hot because of my bed and would need a lot of picking and cleaning to get the lettering out.
I will do a test fit in my A1000 to see how it fits, then think about adding some thickness if possible to the print, as well as adding supports only where needed. If the top faces up, raised letters and icons could be added, would look super cool!
The best quality will probably be printing face up then, just means trouble with the PCI bracket as there will be a lot of supports on that side. The other option would be to have the PCI bracket mounted on the outside of the case.