Congratulation to you Swampone,
I would say NO.
If you bet half $900 either way you're getting back net $885 parlay win ($1800 + $75 original bet - $990 including juice) or net $825 if parlay lose, ($900 -$75) = $825,
You're in a great situation right now. If you want to take the $800, then bet $800 in tonight on Chicago for insurance. If you win the parlay, you win $1800 + $75 your original bet $1875-$800 = $995. If the Saints lose, you still come out with $800.
BOL