I'll be picking up my Oly PCR16 this Saturday and have a Bushnell 3-9x40 I'll be using in the mean time until I can save up for a better scope. What kind of mount/rings will I need to mount it for a comfortable cheek weld? Will I need taller rings or should I just get a hi-rise for it and use the rings that are currently on my Bushnell Banner? TIA