Hi Calvin, I've been down this road, with some discouragement from others as to it's value as a project, but I learned some good lessons, albeit the tough way. I think that it's almost best that you continue without advice because I think you're probably close to learning some important things by yourself. It sounds like you could hack iteration since you anticipate many revisions.

Begin a couple more typefaces and you will be able to move your knowledge from one to the other, eureka moments in your other designs will highlight problems across the board. I became too focussed on my first design and it really stalled my progress, one font later and everything looks different.

If this advice seems fairly mystic, apologies. Perhaps this advice is really terrible, I'm tired but it seems like the right thing to say.

The junctions where curves meet straight strokes are too heavy have a look at ITC Johnson to see how heavier than normal junctions can be rendered

Johnston is a good reference for junctions that don't taper.