Welcome here, Ibrīnišilpathānezel! Feel welcome here and hope to see your contributions to this forum, I'm sure you'll find it most interesting around here...
...and I must join the ranks of the people stunned by your name. Don't expect anyone's going to call you that

For shortening, I'd suggest
Ibrin (though on first sight, my original idea was something like "dilophosaurus"

).