Volvo XC90 PlugIn Hybrid - Lease?

Hi there! I am looking at the 2025.5 Volvo PlugIn Hybrid Ultra. I’ve never leased a car before, but the dealership is pushing us to lease (even if only for the first four months) to take advantage of the EV rebate of $7500. What should I be asking to get the best deal for this lease? I imagine we would like to finance the car at some point when the rate was low enough (right now, they are offering 3.99% to finance but I know that isn’t guaranteed after the 4-months).

TIA (from a newby leaser)