I tend to tackle jobs like this "one bite at a time". Once I have stitched a test block (to make sure my cutting measurements are correct) I will cut enough to assemble anywhere from 1/3 to 1/2 of the quilt. For something like a star block (I happen to be working on one myself right now!) I tend to put my cut pieces into piles for each block then I put as much of the pile as I can fit into a ziplock bag. So one bag may have enough cut pieces in it to assemble 8 blocks. I have another larger ziplock bag to hold the completed blocks, unless they are fairly large (12 1/2" or bigger) then I use a box to store the completed blocks. I will then sew until I need to cut more. Then I usually cut out the rest of the blocks and lather rinse repeat. Once all my blocks are done I lay them out the way I want to assemble then, make sashing if they are are sashed and assemble my quilt top. Once that is all done, I make my borders and sew those on (if I am doing a border). This is just the way I do it. You may find to cut it all out first works better for you. I do it this way to break out the tedium of doing the same task. Your results may vary.