G'day Neal, yes you are correct.Miniatures usually take only 3 years from seed to bloom, whereas standards take 5 to 7 years.However, if you sow seed each year, eventually there are swags of new seedlings blooming--you never think about the wait.
I read where you appreciate white Div 1selfs (Div 1 W-W), but bemoan you aren't getting any.If you like the white trumpets, Div 1, and have a few, why not invest in some smooth white large cups,Div 2, and breed some of your own.Those that like your conditions, will thrive, those that don't will cark it.
Also, you should be able to get a magnificent Div 2 Y-Y, called Gold Convention.It is such a healthy strong daffodil that does well the world over, despite your patch.It also does well on the show bench and is a proven breeder.And it's cheap!! You would get some nice seedlings if you used it.Btw, in case you don't know , daffodils are self fertile.
Comon--it's time you went to seed !
Here is another of my seedlings