To get 160 SLP a day, always use the energy you have to play Arena first.
Only stop using your energy on Arena once you've hit 85 SLP.
This is simply because you're guaranteed 75 SLP daily through Adventure Mode and the Daily Quest that do not require energy. Adding on your now earned 85 SLP from Arena, you'll have a total of 160 SLP.
So, with your remaining energy, you can use it in Adventure Mode to level up your axies.