You're double-arcing with front/side arc with Avenger. When do you take the front shot first, when do you take the side?
My general rules of thumb for order of attack would say take the small shot then the big shot to try and force them to spend defensive resources. There are a LOT of potential factors in this one, though: OP, ECM, XI7, redundant tokens, H9, ISD1 vs 2, likelihood of one-shotting out the front, can all have a significant bearing on it.
Edited by Ardaedhel