None of the components in your workflow are actually required in any way to get SGPro to center on your target (within pixels):
- Like you said, you can enter RA and Dec manually. This is pretty cumbersome.
- You can find somebody's image that is centered the way you like on Astrobin, DSO-Browser or Flickr and populate RA and Dec that way
- You can import RA and Dec from Stellarium, AstroPlanner or StarryNight 6/7
- The best way to do this though is with the Mosaic and Framing wizard. Grab a large-ish working canvas in the area you want to capture and just draw a box around the area you want to image. This will automatically populate the RA and Dec of as many targets as you need to capture that area.
Once RA and Dec are populated, just run the sequence and your target will auto center and start imaging.
Each of those things has its own workflow. I can assure you it's painless though. You just need to find the one that works best for you.
Certainly. You won't ever really need to do this manually. SGPro will do this for you as a part of other workflows. If you do want to use it, just click the Solve and Sync button in the Telescope tab.