... until I have made the sacrifice and purchased a plane, and learned to tune and use it.

... Question is, what should I buy

Start off with a #5 or #4 1/2. Find an old Stanley in good shape. We
ain't talkin' big bucks. Also get the Taunton Press Mario Rodriguez
video on planes. That will get you started. Learn to tune it so you can
get shavings so thin they have only one side. That feels good.

When you get the urge, and you will, then spring for a fancier, sexier
tool like a Lie-Nielson or Knight. The old Stanley will still serve you
well, and you might get a jointer like a #7 just to show off.