If you are considering purchasing an Avante 868 within the next few years, take into account it has a maximum MTPLM of 1800kg so ideally the car should have a kerbweight of about 2100kg. The Ford Kuga is too light at about 1750kg and the RR Evogue at 1850 is also too light..
Also consider many manufacturers are moving across to EVs so it seems to tow a 868 you are moving into 4x4 territory. Maybe jump right in now with a 4x4 and the Avante 868. You will actually save money by not having to upgrade in a couple of years time. Your choice.
My choice would be Avante 868 and a second hand 4x4.