I would go at least 64 66 even better,1 3/4 to 1 7/8 inches at the fads to about mid limb,then tapper to the tip.
You probably will have to steam or boil the tips to get a static bend in the Hickory,it will more than likely break or at least pop up a bad splinter if you try it with heat. As far as someone making one on pp or here for that matter,no one said it couldn't be done,just tough to do and especially for a beginner That's all we were saying. Trying to save you a little heart ache.
If you go 2 or more wide/that short in length and that long a draw for the weight you want it is going to be very very thin and if the tiller ant prefect it will fret,almost guaranteed ,again tough for a beginner. Now go have some fun.
Pappy