Im actually picking one up today in about an hour
Id go with 15x is about all you will need. Nothing more unless your planning on shooting eggs at that range.
But 3-9x is a good range. 10 fixed powers are good if you want a fixie. Not really recomended tho.
PM me some grouping and your set up when you get her all finished.
I kinda wanna see another SPS tac in action.