FWIU there are already-costed launch and refuel mission plans? Launch rocket_2 with fuel for rocket_1 which is already in orbit, attach to object_1, and apply

FWIU there are already-costed launch and refuel mission plans? Launch rocket_2 with fuel for rocket_1 which is already in orbit, attach to object_1, and apply thrust towards an optimal or sufficient gravity-assisted solar trajectory or bundle of space recyclables. Is there any data on space stations in Lunar Cycler orbits? Are there Lunar Cycler orbits that remain within the van Allen radiation belt? What would be the costs and benefits of long-term positioning of a space station or other vessel with international docking adapter(s) in a Lunar cycler orbit?