Cardinal Biggles!!
Welcome - I can't add anything specific about the regiments you're seeking info on, but I can't stress enough how welcoming all the chaps are on here. They're even better in real life as well!
I got the LOA bug a few months ago, and find the knowledge and warmth on here simply inspiring, on a regular basis. It's simple to ask a question, and the responses are just incredible!! My LOA stuff is on the slow burner at the minute, due to trying to sell our house, but I'm constantly marvelled by the knowledge and help on here.
I'd echo the comments about the Mark Allen plates - they were my starting point for my French forces. Contact Wargames Illustrated, and see if they have any CDs left - I picked mine up directly from their office in Nottingham, but I'm lucky enough to live near there
As for the Hall stuff, again I'd definitely recommend it - I picked up one of the Baccus CDs featuring the French Infantry Volume at the recent Castle Donington show, and it's just a mine of information. Baccus were brilliantly helpful as well!!
Good luck with stuff, and keep us up to date with how things are going!
Andy
http://haveacare.blogspot.co.uk/