Depending on your situation and interests it may be worthwhile. I mow five acres on our place and every few weeks pull a sweeper behind the mower to pick up clippings and probably get 20-30 cubic yards that I add to compost piles. Of course my grass isn't as high as yours was so you'll have much more. A huge pile of clippings will generate heat and should be watered and turned every few days depending on conditions. The heat will kill any seeds in the pile but you need to try to keep it from getting over 160 degrees, as over that it kills the beneficial bacteria. I turn mine with the FEL. After a few days the piles will shrink as they decompose and you can consolidate piles...
It's just a thought, and it's what I would do. I started composting last year and it's generated a lot of great amendments for my garden. Matter of fact I hauled 24 yards of "gin trash" in yesterday and plan to get that much more today for composting.
If there's not enough carbon source in the pile, or if is too wet it'll smell like a manure pile. Trial and error is the best teacher to overcome this.