I would like the ability to collect data from the sensors simultaneously.
You won't be sampling simultaneously with either of these sensors; you'll be sampling sequentially. It may be a really fast
sequence, but it's still a sequence.
You need to do some analysis on the data you're looking for and see if sequential is good enough.
If it's not good enough, you need a way to trigger all the ADCs at once, and collect the data at your leisure. The Analog AD760x (AD7606, AD7607, etc) devices have up to 8 ADCs for sampling 8 channels simultaneously. You should be able to use multiple devices driven by a single trigger to sample more than 8 channels is a truly simultaneous manner (well, there's that whole electrical signal propagation/speed of light thing to deal with, for the truly pedantic).