I'm keeping this brief because I don't want to flood you with TMI at this stage, but here's the high level summary:

1. My conservative estimate is that the total cash outlay per adult would be no more than $1200
2. The mileage numbers you showed us in your OP were >120k
3. We all have varying opinions on the value of miles/points, but sub 1.0 cpm is a complete nonstarter for pretty much everyone on FT