Congrats on the 500 Trent.
I'd go .25mm and .50mm, 1mm is a bit too big.
A .10mm size would add a finer tune to those 2 sizes if available.
Hopefully others can throw in some thoughts on sizes, even anyone thats done the tune previously, they may chip in with what they've used, be nice to have a cross section of whats needed or been used.