Input on work in progress typeface

I'm new to the world of type design, but I've been designing watches for some time. I've frequently modified existing fonts to fit well on a watch dial (normally redrawing the 4's, 6's and 9's) and redrawing numerals from historic watches for modern dials.

My latest design involved creating a full set of numerals from scratch. The numerals are inspired by many mid-century watch dials. I like the flat sides and rounded curves of the numbers and the tiny micro serifs like a copperplate.

I felt the combination of sharp and round would translate well into a typeface. So I
 decided to take the leap and build the rest of the typeface.

As I'm new to this, it'll start as a single-weight display font for marketing, etc. I would like to make a thinner weight eventually, but I need to walk before I can run.

I've been working in Glyphs to build out the font. I've done the alphabet in upper and lowercase. I'm quite happy with the uppercase, but I've struggled to bring the same elegance to the lowercase. In particular, the /a/e/g/f/s/t/ don't feel right, I think I like the /b/d/p/q/ and the /m/n/u/r/.

I've not got all the spacing right yet and haven't started kerning pairs. I'm just focusing on getting the forms right first. 

I'd love any criticism or advice on how to proceed.