Wait... why would you accept less? Sorry I am alarmed on your behalf...
I may be thinking about this wrong, but I can see how it gets complicated.
1. Does the state calculator account for any travel expenses? 2. I would think the travel expenses should be a shared expense, but would also account for income discrepancy.
Here's why I ask. Let's assume your H is the sole income earner (I don't know your situation here).
The calculator spits out $1000/mo for support assuming you all live in the same town. Now it costs him an additional $100/mo to travel to visit the kids periodically.
The total cost of child support is now $1100/mo. You still need that $1000/mo. It's a shell game.
It doesn't matter that it was his choice to live apart or not. It is just a fact, and it increases your total parenting costs, and somehow the two of you need to come to an arrangement to pay those costs.
If you both earn income I can see how this might get more complicated about who pays what percentage of the travel, and maybe that's a negotiable point...