I wintersowed penstemon smallii years ago, and I just don't remember it being unusually slow, though maybe it was. It bloomed second year. It has been a beautiful plant but seems to be dying off. Guess I need to start a replacement.
There are some that are supposed to bloom first year from seed but I haven't tried any of them. I have found, though, that any plant that blooms in the first year tends to act as an annual or very short-lived perennial.
I never baby stuff in a jug for very long. I plant out everything when very small. I've even slid out the whole blob of soil and planted the whole thing in the ground intact if the seedlings were too small to handle. I just get sick of having jugs sitting around and sick of pampering them. Once planted out, they either make it or they don't. I don't fret over the things.
I grew angelonia from seed once, inside under lights. I don't think they bloomed till about August. I'm not likely to try them again.
I've not done pelargoniums, either, only from cuttings. Have you seen the new yellow ones? I think it's Burpee that's selling them (plants, not seeds).
Karen