I see that you can do this in single stage mode according to the rules, but Is time trial ok too? As in if I get a record time in time trial on a stage with video proof, that will be fine? As long as I obey the other rules too?

Yeah that's fine

Just to ask @swampert938 would you be able to reupload your current stage time for Finland Stage 3 as it is unavailable to view? If you do not resubmit with the correct video we will be forced to reject your current run within the next few hours I'm afraid sorry. :/