Well.. im probably the bad example with a model s, ascent, bronco, gt500 and a raptor incoming next week with 3 boys ages 8, 6, and 4.. look if you got the cash to spend, if it doesn't affect your life then pull the trigger on both. If you're nervous about it then in my opinion you should not be doing it because if you weren't in a pickle you wouldn't be asking the question when we don't know your financial situation.
I look at it this way.. raptor costs $80k. Are you in a position with your portfolio where if you burned $80k today in your backyard you'd still be fine? If the answer to that question is yes then I say do it.
The alternative is maybe sell your f150 and replace that use with the Raptor.
Ultimately if you got MSRP on all your vehicles then you're not losing here.. whether it's the gt500 or raptor you will sell for more than you paid even with taxes accounted for.