Looks about right.
The estimated ratio people seem happiest to target is roughly 1:1 for IBU:OG. You've got that.
I've not tried El Dorado to know whether it'll stand well by itself. I'd be tempted to also chuck something else in at 20mins or 0mins to add a bit more complexity.
Fwiw, I'd suggest a session IPA is basically an APA. So I'd say this looks more like an APA technically. Not that it matters really.
Also, not everyone likes crystal in their hoppy IPAs/APAs. Sometimes it works well, other times it sort of detracts or distracts a bit from the hops. So it's not a bad thing, it's just whether you think it'll work the way you want, or if you should go for a non-Crystal approach (if so, use some (5-10%?) Munich instead). Either way, you've only got ~3%, so it's not much to stress about.
2c
Good luck and report your results!
Ps: Is gladfield med Crystal only EBC 78?