The only ones I can help you with production is mulch and edging. We can put down 4.6 yards per hour and I can usually edge 5 lin. ft. per min.
I don't run 52" mowers so
Trimming depends on what you are trimming or how you are trimming
(vert vs. regular.)
On the trimming, are you boxing, shaping, or just cutting back?
Our basic fuel consumption is .76 GPH for Walkers and 1.13? for our Deere's.