So it sounds like if you are in a normal raiding guild (say one that will be able to clear normal fairly easily but then might struggle a bit with heroic) then it might be in your best interest to invest some time in the crafted pieces as they will have a little more longevity.
Here is my brief plan for getting ready for normal mode on the 2nd.
1.) Get at the very least full 630 ilvl heroic 5 man gear.
2.) Get the 640 MC helm.
3.) run the three world bosses each week (three lockouts) and coin them each week and hope for the best
4.) On the second, get a friend to cap conquest and get a 660 trinket (mainstat, with mainstat on use)
5.) Have been gathering enough apexis crystals to buy and upgrade one piece
6.) Be farming and crafting enough to craft two 640 epics to replace pieces I have been unlucky with
7.) Get one alt to level 96 which should be enough to craft a staff???
I think that will put me in a good spot to not be a drain on the guild while allowing some avenues for upgraded gear as we progress through and drops maybe don't go my way. When LFR opens up, it will be the base level crafted though, so that is something to think about.