I think either a scrum half would be decent for you but the best position for you without a doubt is a hooker! your small to be in the scrum as a hooker and if you have good passing skills you will be useful in the lineouts and other moves from the ruck. Go for hooker, trust me!
Yor skills are perfect for a N8. You would be perfect to play in this position as you will have quite alot of ball time and it will open lots of oppertunities to run and find gaps on the field whilst in a maul.
Maybe half back or a loose forward, depends how good your passing is, if really good then a scrummy would suit you
alot of other people are saying you should be a loose forward, which is a good option, but your skill and size would definatly fit the scrum half position
It depends on a few other things like how well you can pass tackle kick ETC. If your fast maybe somewhere in the backs or in the back row. It also depends on your age group. Because you never said how old you were. If you want to play in the back get brilliant at passing and practice by hitting a target in your garden or practice with your Friends. Also practice your kicking.
N6 or N8 would suit you
