"He has come through that run in Auckland really well, but the 1800m may be a touch short for him on Saturday.
"As long as he is finding the line well, we will be happy."
All going well, Platinum Invador will return to Ellerslie on February 15 to tackle the Gr.2 Avondale Cup (2400m) as a lead-in to the Auckland Cup on March 7.
On the same New Plymouth card Latta will be hoping to snare some more black-type with two-year-old filly Amosia who will contest the Gr.3 Woburn Farm Classic (1200m).
The daughter of Squamosa has had four starts as a juvenile for two placings, including a third in the Listed Wellesley Stakes (1000m) at Trentham in October.
Latta is pleased with the filly ahead of tomorrow where she will jump from the outside gate in the eight horse field, however, she believes Amosia will be suited over more ground.
"We put in a late nomination for her just because it was a Group race," Latta said. "She had a little freshen-up after her last start and she has done well.
"She has been running on and I think once we get her over 1200 and 1400m she will get better.
"We would be rapt if she could run in the first four on Saturday."– NZ Racing Desk