yeah, it sounded good.
i would sent the transcripts to LSDAS right away. Just in case ...plus, the updating part doesn't take that long, it's the initial part that takes a bit of time. And, if they make a mistake, you'll have time to go over it and have anythign corrected.
Get the profs to write them now. Even if you tell them now, i bet it'll take them at least 2 weeks to write it. And I would send those to LSAC as well. Your other option is have the profs send out the letters to individual schools, but i think sending them to LSAC will be much easier.
You know, you can even apply to schools before you get your LSAT score...they will just put a hold on your file until it's complete. Also, write your PS and any other additional essays that will need to be writen for the schools you're applying to. And dean's forms ... have your dean fill them out asap.
I think it's best to get on these things as soon as possible. I found that I always thought I had a lot of time...and then next thing i knew, it was past my deadline. Try and get everything finished, (applications, essays, LOR's, Transcripts, dean's certifications) and then just wait for your LSAT score.
Applying through the school's websites will actually make the process a bit quicker. The ones I did like that, i found to be much easier and less time consuming.