Levelling advice

I am going away for the first time next week in my Avondale Dart 545/7 (with a motor mover fitted) but don't have any levelling equipment at the moment. I have seen the Millenco levelling products on you tube and wondered what people thought of them. The aluminium level, the stacka mats and the quatro level. The aluminium level looks good but is it safe and secure. I was also considering upgrading my wing mirrors from the millenco strap on ones to the millenco screw on ones which appear more secure. Any advice greatly appreciated.

Thanks Adrian