I have the tyres like Buny, our hills are heaps steeper than yours & I manage fine… most of the time.
Only had it stuck once when I got side on down a steep slope one year when it had rained for 40 days & 40 nights, it wouldn’t turn to come back up the hill, just kept going sideways across it.
I hooked up a ‘come-along’ to a fence post & winched the nose around & got it back up the hill that way.
I’ve since learned that the steering works heaps better if you reverse it up the hill.
I had proper ag tryes on the old Ford 5000 (now gone to my Bro who is a flat lander) & they fairly chewed up the paddock.
The Ford 5000 had the filler cap up on top just behind the instrument panel.
About eye height when standing beside it.
I used to hoist the 20L can up & get the nozzle in the filler & then lift/tilt the bum of the can up & rest it on my right shoulder.