why not adjust surfaces of what you have now, won't take away any strength, but it will change where the ball motion is on the lane.
You can always move your feet inside and try that approach as well
target 12 to 15ish and move your feet by the same amount to try it out.
you might find enough oil to use these still
I try to have a mixture of strengths and surfaces in my bag when you don't know what your going to see.
Definitely a weaker piece goes with me everywhere, then a strong piece, then mix it up in between.
keep in mind that sometimes you have a good look up 5-6-7 and maybe its better at 15 or more. the track area is the most common target and typically has the most friction on the lane because of all the use there.
I would get 1 and try it, but certainly take your balls now to your shop and they will be able to help you, those are good pieces though