There’s really no way of telling at this point because many of the incentives and programs won’t be available until later today. An issue that you might butt up against is the fact that adaptive cruise tends to be a premium option or something you find on higher trim cars, which usually ends up giving you a higher payment. The trick is usually to find the trim that leases best for the car you want, and then the lowest msrp car that has all the options you need. Every creature comfort you say you need will add to that number.
Does it have to be a car? Not sure about navigation, but if you want a 4x4 with adaptive cruise control and are ok with a truck, perhaps a Toyota Tacoma. I believe even the base SR has adaptive CC standard and you should be able to stay under 250/mo all in with nothing more than first month.
If you’re open to anything, stop by a Toyota dealership and take a Tacoma for a spin. Not sure where you live, but there are quite a few great brokers on here like @Jrouleau426, @anon27376261, and @Bostoncarconcierge that seem to be magicians with Toyota truck leases.
I think you might be right, but we have no idea how Subarus in general will lease this month. We don’t get a ton of great Subaru leases here usually.