You better do and listen to advice, no one here will request you of anything but just help as you have asked, only fraudsters will come your Dm because you made mention of $100k.
With the way exchanges has been going on with kyc and tight regulations, making such a deposit at a time may require you to do a kyc when they suspected that you are doing lots of transaction. I would suggest you make deposits in batches and buy your btc and withdraw them as soon as you complete your purchases.
You can also use the forum escrow though charges may be required.

Trading here in cryptocurrency is not an easy things. It really needs skills, knowledge, and understanding.
And there are several traders even the experts made a wrong move or mistakes too in trading activity.
and most of the mistakes they've made in the end they learned from it of course.