Hi Vicki
Good luck with you grant, I cross my fingers for you.
I'm sure when you've got your script and then from that the score musicians will be easier to find, and if the MD is involved then it's much easier to bring it all together. I'm sure you've done loads of things like this before.
For my part I have some experience of these as an Artist, it's quite a commitment, have you got an idea of whether it'll be a touring musical or a residency, how many nights are you looking at, that might determine the musicians you get.?
If the show is chargeable, you might find it's easier to budget if you state a flat fee for each musician/artist, then it's a bit easier to know how much to charge for the tickets to recoup your production expenses.
I don't know whether you are obliged to use musicians that are members of the Musicians Union, I know I wasn't allowed to do certain things unless I was.
We would start rehearsals in July for a week long touring production in September (practising once a week), For musicians who are good readers it won't take anywhere near that long if you have the score.
Good luck I'm not sure this helps at all..Hope all goes well with your Father, Vicki.
cpm