I'm 5' 6", pattern size 16 on top, no defined waist, plus a tummy and bingo wings!
IMO straight skirts just emphasise the tummy, flared skirts are much better.
I have made this a couple of times and been pleased with it.
I have also hacked the circular skirt of the walkaway dress (front cut on fold and side or back zip) and it's worked well.
I like the bell sleeves on the Vogue dress above, but do you really want long sleeves in a summer dress?