I will say that you would have had the 175 kg if you had structured it like this:
140 kg, 1x1
160 kg, 1x1
175 kg, 1x1
If you’re going to test for a max DL, you need to cut out the fluff beforehand. Prioritize the Deadlifts over things such as these:
Save this stuff for after you’re done testing.
TL;DR: cut down on the number of ramping sets you perform. Also, save the minor stuff for after your main lift. Good luck. What program are you running? Also, if you’re overthinking a max lift, rip an ammonia packet and pull.