Newbie - seeking advice

Hello all, we are really keen to get caravanning this season and have a budget allocated..

As a family of 4 we would like a 4-berth caravan.

However, we are restricted by the towing capacity of our Vauxhall Zafira 2002 1.6 Petrol.

This is the first stumbling block - I can't quite establish the exact towing capacity for the vehicle.

There are four weights on the VIN plate which I think indicate the following:

1970kg (Gross Vehicle Weight?)
3315kg (Gross Train Weight?)
*am I correct in thinking that GTW minus GVW gives towing capacity of 1345kg?

However, underneath that there are the following lines:

1-0945kg
2-1050kg

Is this last one (1050kg) the towing capacity? Seems likely.

I have identified the Elddis Xplore 304 and the Adria Altea 390DS as potential options if this is the case - we like the look of both of these, especially the foldaway bunks for the kids.

Any advice on the vehicle weight thing would be most welcome - and any other caravan suggestions as these two options seem few and far between in the used 'van sales.

We have looked into upgrading our vehicle to open up more options, but then I run into another issue which is that I am post-2013 CATB only license holder, which restricts me to towing 3,500kg combined (GVW+MTPLM) weight, which becomes a whole new can of worms - ideally one I'd rather not open just yet if we can find a working combo to get us on the road.

Thanks in advance!