Spellcasting sequence for star travel:

1. Get to orbit. Either use several fly spells to ascend to the vacuum, then accelerate to orbital speed (fly speed is now inapplicable) or greater teleport directly to synchronous orbit. A wide miss on the greater teleport will still be in orbit.

2. Get to solar orbit. A wand of fly as 100k delta v.

3. Determine the rule for wall of force by casting one above you. It will either snap to you or snap to the sun's surface (which is rotating).

If it snaps to you:

4a. Cast a wall of force at an angle of tan-1(20 feet/second / c / 2) off the target star.
4b. Get 60 feet away at 90 degrees from trajectory to star.
4c. Cast feather fall
4d. Close on the first wall of force at 20 feet/second
4e. Cast another wall of force an angle of tan-1(20 feet/second / c / 2) off the target star opposite to the first.
4f. Increase to 40 feet/second. Ready action on hitting wall, cast Resilient sphere.

If it snaps to the star:

4a. Raise orbit so that you would need a velocity of just under c to stay over its surface. Wait until your orbit is aligned.
4b. Cast feather fall.
4c. Cast wall of force behind you. You might need to angle it so you get kicked off the star's rotiational plane.

5. Wait until you approach target star, recasting any stuff you need to survive. When you can see planets, use fly spell to adjust course to hit one. The sequence in 4 can be used to stop you again if need be.

6. Cast feather fall and slam into planet.

7. Cast teleportation circle every day for a year to create a permanent stargate.