This rose seems to strike surprisingly easily if you get a good example. I put three cuttings in a resealable bag on January 28, 2021. By February 26 all three were starting to show roots at the bottom of the bag. The cuttings were taken from an old plant, which presumably was budded before the cultivar was weakened by excessive propagation (if that legend about weakening is actually true in Australia).
The heritage roses article on propagation* says 'As a rough guide: for rambler roses, you can start looking for roots at 3- 4 weeks; for Tea roses from about 6 weeks. HTs, especially the yellows, are much slower and have a lower success rate.' Yet here is an HT, with a fair amount of yellow/foetida in it, striking with 100% success rate in 4 weeks. You can be lucky.
I grew the Peace hybrid tea rose in my Miami, Florida gardens during the 1950s and 1960s. The bloom I remember and my photo collection shows had a pink tinge at the edges. The color held fairly well with some fading. The blooms were best in the late fall, winter, and early spring months there.