1.9 v 2.5

I'm having a dilemma buying a t5. We want to tow our bailey olympus 546 caravan mtw 1500kg and I'm looking at a 1.9 84bhp. Will it tow well.? Particularly don't want to get stuck going up hills. I also want to be as economical on fuel as possible and will do 15k a year pootling around with kids...

Can you help me decide which would suit my needs. The plan is to buy the van and convert with side windows and rear seats. I will be using it for work but also want to tow my caravan with it which has a kerb weight of 1395kg I know the 2.5 has the power but I also need to consider running costs...