Hi Simone,

and welcome to PIO, as I believe it the sooner the better, but it's not just the TRA's, out agent has said these take 4 weeks to get approved, I think that's two weeks with TRA if your employment is on the MODL, one week getting there and one week getting back, but then you have to have the visa application logged by the end of August, before the 1st September, to advoid the changes.
Who is your agent??? What is your employment?, if it's straight forward then yes, once the TRA's are off you can start filing in the visa application form. (which is where we are at the moment).
All the best, you are going to be very busy..............
KP Nuts