The 27-year-old, who has had a rollercoaster of a season as scheduled events across Europe were cancelled or cut short, said that he was "stoked to be able to get some actual training on a course" before he makes his second Olympic appearance.
"I'm fortunate that we've got three days here of training which is probably more than we've gotten at an event this winter," he said.
"It's a great course, matches up really well and from a safety aspect it's pretty good as well because you're never too high up in the air but the jumps are big. Sochi, the last jump was just insane - there was no room for error. But here, you can really just go full gas, trust in yourself and let it rip."
Despite having undergone two surgeries in the past 15 months, Grimus is heading into PyeongChang 2018 confident and with the knowledge that he can ski fast.
"I just know I can do it."
"We've got a great team here, heaps of support, dietitian, physio, doc [and] coaches all around us.
"We'll be spending a bit of time at the computer seeing where we can go better and that ski tech will be making sure that our skis are fast.
"I've got full trust in everyone and we've got a great team with OWI [Olympic Winter Institute] and AOC [Australian Olympic Committee] has put up a really good show here for us and everything's organised I think better than any other team.
"We definitely have all the tools to be able to execute and it's great."