If you just power quest, you should reach 50 merely by deconstructing items in woodworking, blacksmithing, and clothing before VR9. I am, of course, basing this off my experience, where I did the same and got done very shortly into VR8 with my last craft (outside enchanting which is sitting at 24 as I slowly deconstruct solo my way up.) The last to hit 50 for me was blacksmithing, mostly because I sold a number of white items from BS whenever my bags were full and I had nothing else to sell... because I didn't feel like running to the bank before and after deconstructing.
I have been working on everything at the same time, so this is with a stack of every alchemy plant in my bags, along with a few potions, the 3-4 items I want for making food, and some research gear... but with a pack horse and maxed bag size. I usually complete about 1/8-1/12 a map at a time before needing to go back.
Note: This is merely from deconstructing. You do not need to actually make anything. Also no farming was done, mostly just quest and keep going. Just so you know when to expect it if you don't trade of spam craft!