I almost always use my FMQ foot to do straight stitching unless all of the straight stitching is going in 1 direction (rarely) because I hate having to turn my quilt inside my 6.5in throat a million times. Since your lines are so short, I would just use the FMQ foot for that and try to stop on the points to readjust your hand position. It can be difficult to keep the line straight(er) if you stop in the middle of a line. Once it's quilted, the shrinkage will hide any minor bobbles anyway.
What is a 1/4 in pressure foot? I always use my walking foot when doing the straight lines in one direction. Recently, since I got a ruler foot, I've been loving to use a ruler to do straight lines because it's so much faster! I'm a daredevil with speed
