Digital BW, The Print

Hello,

I must print some A3 size photographies for a photo festival. I 
tried to print some of them with UT2 and an Epson 1290 and Epson 
Photo Paper. The results are very good. But I know Epson Photo paper 
is not an Archival paper; so do you think photos will fade after 
some time. I put Printguard after (even if bronzing is minimum)and 
all the photos will be under a glass (or plexiglass...).
So do you think Epson Photo Paper is the good choice? or Premium 
semigloss would be better?
Thank you,
Boris Joseph