Dear Gness...
I find myself caught between two loyalties here.
I could refer you to this...
https://www.independent.co.uk/extras/indybest/house-garden/gardening/best-wheelbarrow-for-mucking-out-for-allotment-mud-poo-picking-tyre-a8232376.html
Dave will appreciate that, for builders, the "Hammerlein" is generally regarded as the Ferrari of conventional wheelbarrows.
My dilemma is this: I know you to be of doughty Irish stock, but how can I put this? Your physique is at best, slight. I would say "petite".
Even with all the finest cursing available to you, you will inevitably, struggle on heavy-going. You'll find yourself reluctantly calling on your reserve solution and calling for the cavalry.... i.e. Dave.
To avoid conflict, and the possibility of losing two dear friends... I would hire this:
https://www.leanestoolhire.com/products/petrol-power-barrow-300kg
I'm basing this on the assumption that it occasionally rains in Kerry, and that the ground would hell to navigate.