I run a 7 foot 2 stage blower on a 27 hp compact tractor.
The keys you _need_ are:
Slow reverse gear.
I could use more hp in deep heavy snow, but the 3 reverse gears - one is very slow - make it work good enough it works well for me. And the live pto allows me to step in the clutch 1/2 way and let the pile of snow clear out while I wait, if I come upon a bigger drift.
It can be miserable trying to run a snowblower without live pto. Possible, but miserable.
Vee blowers have their own set of problems, cheap but there is a reason....