Series 3 tyres

I am thinking about fitting some new wheels and tyres to my series 3, at the
moment I am considering some 7 x 16 8 spokes with some Colway A/T tyres
235/85 or 265/75.
I only do about 5000 miles a year 50% of the time on road often towing a
trailer and 50% light off roading (greenlanes & across muddy farm fields
etc)

Anyone got any recommendations.

Thanks

Liam