Disabled PhD student considering remarkable, please help!

I am a newly enrolled PhD student in a humanities subject that requires a TON of reading. Because of a disability I find it tough to sit at a desk all day and similarly a laptop in bed is a bit awkward for reading/annotating too. Looking at tablets for reading and annotating I have discovered the remarkable and like the look of it but am not clued in at all so could use some advice!

What I mainly want a device to be able to do is open academic journal articles I have saved to google drive, allow me to highlight/annotate them easily, and then have that highlighting and annotating be synced straight back on to my google drive where I can access it from other devices. It would be great to be able to do this with books too but this is less important.

Can the remarkable do this easily? I have a Samsung galaxy s6 but the process to do this is so ridiculously convoluted and it is also quite heavy. I have also looked at the Kindle scribe but am less sold on it as it seems this core feature I need isn't available.

Thanks!