3A prospector > 2A scoop for me. Scooping with a 2A does take an eternity, no hiding that, but you might only need to scoop two or three jumps worth of fuel on a mining trip. A 3A prospector makes a huge difference to how efficient you are whilst actually mining, certainly enough difference to offset the time spent scooping.
Edit: do you mine in open by the way? If not get that shield off

Stick a 4A refinery in there and in the class 3 slot your refinery is in now, stick a 3A collector. Then stick another class 2 laser on it. Also max your power distributor (and don't engineer it with engine focus, if you use a class 7 you can get away with charge enhanced or just go balls out with weapon focused, both of which are far more use for a miner. You don't have anything like enough juice there for prolonged mining laser fire. Most important, 6A thrusters... Then get whatever power plant you need to run that lot. - my Python miner is a converted mission runner and it already had a 7A but that's overkill.
If you do mine in open do
not drop the shield though, or you might as well just drop into the ring and self-destruct to save yourself some time.
Oh and if you're hotspot mining, detailed surface scanner in the class 1. If you're not, yeah push the boat out and stick a class 1 limpet in there for a total of nine.