The guides on wiki are alot of help, and pretty much the best ways to go about it. I used
Xarc's guide. Demon arrows cap at 69, they are your next synth. Make sure you get guild support and even with a large amount of breaks early on, the mats are so cheap and come in stacks of 99 you should still break even at least if you quiver and ah them all.
Edit: Just noticed thread is 69+, not 61+ lol. It's early ><
anyway do the ancient lumber route, caps at 72, and save them all if you plan to go past 80. At 72 I just jumped straight to ebony pole's. Buying lumber from ah and npcing poles was very little loss and was the cheapest way to 79 I found. Then you can use all the ancient lumber you saved earlier to make mythic wands. I would suggest you start camping the ah now though for phoenix feathers, they really suck to get a hold of ><