I am no expert but in my opinion it comes down to a few things. You will get more gains with more test, but you dont have super long left in your cycle (assuming 10-12 weeks) so maybe better to save it for next time?
Test is similarly supressive at 250mg per week to 500mg, but the gains will be much better, which is why 500mg/week is so often suggested as a beginners dosage, so you arent going to hurt yourself by upping the dosage, especially with the aromasin.
In the end its your call