I've never used pre wound bobbins, so don't know the answer on those. It's really easy to wind a bobbin. You don't even have to unthread the sewing part as the bobbin winding is a separate operation.
I've used titanium needles in my other machine. Since I change the needle with every project, I personally can't vouch for the savings vs. regular needles.
unfortunately, since I have room to have both leaves in the table, it's turned into an extra stacking area for stuff...I guess I have an accummulation disease.
I'm excited for you and your new machine! May you have many happy adventures together!