The second-placed O's will take on London rivals Brentford in third at a packed Brisbane Road in their televised promotion showdown.
Slade said: "The football club deserves it. The players and everybody associated with the football club deserves a big day like that.
"We've created records already this season. But we can't stop here. We have to keep going right to the end because there's so much more to play for with 10 games to go.
"But it's going to be a tough game because Brentford are a very good side. Their record stands up over the last 23 games. It's phenomenal."