Yeah, the Intended Travel Date is your chance to have some say in when your visa starts, based on when you are available to travel.
You shouldn’t base it on processing times... if you want to travel as soon as possible, then put a date as soon as possible.
If the visa is processed by your date, then great - but if not, the fact that you put an early date is not an issue... they will just start the visa from when it is issued (or a few days later).
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