Many exchanges may have a higher level of trustworthiness than others, but there is always some risk involved when using any platform.Personally, I haven't traded much on instant exchanges before, as I prefer the added security of using a traditional exchange. I think it really depends on your personal preference and risk tolerance.  Breaking up larger transactions into smaller transactions can certainly add an extra layer of security, but it can also be more time-consuming and inconvenient.
 So, it is up to you to weigh the pros and cons and make the decision that feels right for you.......