Yes, it is safe to run E5 if you car is already mapped for 95.. E5 is a better fuel
Maxol has a higher octane rating so is better than standard 95... If you were going to be using E5 full time, you could map for it and get a few more ponies also
you can get your apexi tweeked for around 300 euro, so if you done some mods and mapped for e5, you should see improvemnt.
from v5 on the standard ecu is remappable using Ecutek software