I also agree with the Grand Company quests. I'm kinda in the same boat that you're in. I was concentrating on crafting classes until 1.23 came out. Now I realize that I really need to get the storyline stuff done and I only have a few weeks in which to do it.
If you've got a class that's around 30, you can solo your way through the first Grand Company quests and quite a few of the main storyline quests.
My advice is to take a night and go through all the Grand Company Recruit quests.
If you check out this page, it will show you the first few quests of each GC that you'll need to complete. After the first 5 of each city (you have to do them all) you get to choose only one GC to continue with.
http://ffxiv.gamerescape.com/wiki/The_Maelstrom
Once you've gone that far, I'll be more than happy to level with you and go through the rest of the quests with you as far as I can. My husband is level 50 drg, so he can help out as well. I'm online most weeknights from 6:30pm Pacific Time until around 10pm Pacific Time. Tonight I think I'm going to try the Imperial Devices quests for all 3 GC's so I can get as many seals as I can. After that, I'm going to exchange the seals and join the Maelstrom.
Look for me online if you want help getting through all this!
Also, I have most crafts between 32 and 38 and would be more than happy to craft some stuff for you if you need it.
-Tryst Wildkey