Hi,
I am pretty sure that the remote environment itself has no limitation regarding what classes do you import and use in your strategy. Why would they do that?
However as far as I saw from other users (doesn't use the remote platform myself) there is only 1 file (your strategy) what you can upload and access on the remote platform, so that is not a working scenario to upload multiple files (strategy+libraries that the strategy is using). But this is something else...
On the other hand, give it a try and test it

.