I did consider a Liberty because I have cathedral ceilings and lots of glass but the 1750 copes well. The 2 guys that installed it walked it in from the verandah between them! It had to be over 100kg each they were lifting and a really stupid thing to do on a regular basis. According to the site yours is only 9kg more than mine but I find that hard to believe when you look at the dimensions.
I often hit the air tube when i'm putting big stuff in. I hope it's as solid as the rest of it.
The guy in Tassie that worked on wood stoves full time had a Liberty because he said it was the best you could get.