Husker, please know in the beginning there is never enough, its never ready fast enough. If things are frozen where you are (like I expect them to be), tie up four pallets to make a box with no bottom and place it up on the snow and start filling it up.
Kitchen scraps and yard waste as you get it. Manures as you can find it. Chop longer brushy yard waste into hand sized chunks. Once you fill your first one lash three more pallets to the first bin and continue on.
Spring will come. Your too full bins won't just look like they are slumping down, they'll look like the insides are evaporating. To a gegree they will be. Decomp will kick in as spring comes.
What was a whole lot of stuff laying around will convert to a little bit of partly composted material. You can spade that roughage in, because you've nintey days grace between adding manure and compost and harvest.
When ever I start a new garden its year four or five before my need for compost and my available compost catches up. No matter how many leaves I steal, or how big the manure pile I start to empty.