Hi FO123,
I think your looking for the small corner of a very niche market. Very hard to charter because of the (I think) day VFR only rule for 135 ops. Maybe a lease back to a rental outfit.
I have no experience in the Mirrage but it seems like a very capable airplane for private travel.
Curious what part of the country you are looking to base it in. In the summer time there would be some market for it in the NE. Going from HPN or TEB to HTO, MVY or ACK. But there is a ton of competition in those markets.
Best of luck!