Mine is a T28. Fully converted with pop top, fridge etc and loaded with all my stuff (inc bike) it hit the scales at 2680kg. This is only with me, or me plus granddaughter (in which case I can’t fit bike in) so if you’re carrying 4 people plus luggage then you could be sailing close to the wind. Saying that, when mine is fully loaded there is no space to fit anything in regardless of weight. If buying from scratch I’d probably go for a T30, but if you’ve already got a T28 I wouldn’t sweat it