I was running a 600 Farm King for the last 6 years on a L185DT..
I had to make sure that I never let the snow get deeper then 8 inches, part might have been that the Tractor never ran all that great..
The PTO issue just takes some planning to overcome, also I was running the PTO in the 3rd gear which IIRC was 1000 rpm..
I will say this year upgrading to a newer larger L3600 with a live PTO has made life much easier...