Forgot to mention trailer nose weight SUVs are generally a fair bit higher than cars 130-150kg cars are generally less than 100kg some as low as 70kg. This may or may not be an issue depending on your rig.
That's a good point. I've just taken delivery of a Rav 4 Hybrid which has a tow capacity of 1600kgs and selective 4wd, but some of the Toyota tow bars only have 50kg nose weight capacity, whereas my trailer is 120 kgs, which is why I still have the Land Rover.
Beach launching is glamorous, sexy and sporty, but fraught with problems. I'm sitting here thinking which would be the right one to start with. So you find the right beach with enough water to slide the boat off without getting any sea water near the car, major corrosion

Then you have to pick the right day so that you have an offshore wind or no wind (ha ha) to flatten the sea, otherwise you'll have a boat full of water.

Next the bottom would have to be firm sand or shingle, which as we all know shifts and moves along the shoreline, moving your launching area. More so, have you anywhere which will allow cars onto the beach with boats larger than 16'?
The Sportage is a nice car, but I would say stick to Slipways.