Well, your SSD is an off brand, that would be the only thing I'd worry about. Also, 1 TB of storage isn't bad, it just isn't that much anymore.
For your storage options I'd recommend one of two things. Thing one is a 2TB drive and an Optane accelerator. That will give you SSD like performance and net you twice the storage space. Thing two is a hybrid drive, part SSD and part HDD. Both cache the most often used files to an SSD buffer so that commonly used things load a lot faster than a standard HDD, but also give you additional storage.
You can pick up a reasonable 2 TB drive for around $60 and a 16 GB Optane module will run about $30. The Firecuda hybrid drive will be around $90 as well. Both options cost slightly less than your original storage options.
Otherwise your system looks pretty solid and should be a joy to game on.