There are different scenarios to consider. For greatest guaranteed return, you take the Panthers ML (+265 for the sake of this example) for $500.
Philly wins, you win $1500 = 500 = $1000
Carolina wins you win $1325 - 300 = $1025
If you want to try to middle, take the points for $850.
Carolina does not cover: $565
Carolina wins: $550
Carolina covers but does not win: $2350
You can guarantee yourself $1000. Or go for the possibility of $2350 while guaranteeing yourself $550.
Either way, good luck. Let us know which way you go.