no reason to do it all at once, i think. and if kita concerned about it at all, kita could do things slowly, am sure they can handle that well and of course the best thing to do is not to encash it one time and not to use just one service provider. There are so many ways to do it. Goodluck then if kita have that amount.
I wouldnt want to get all my Bitcoin cashed just at once because the price of Bitcoin could go up the next day. The people that cashed their coins out when the price of Bitcoin was around $20 per coin easily regret that theyve made that choice since the price of Bitcoin is over $2,000 now.