As you wait to collect funds for your gun, it would be a good idea to educate yourself as much as you can before you buy the gun. Use the search function here for threads that talk about "Fusil de Chasse", "Fusil Fin", and "French Trade Guns" for examples.
It would be a good idea for you to contact anyone in your local area that has one of the guns and better still if you could handle or shoot one.
These guns range from $600.00 (India Made) to $3,000.00 for a well built custom gun. Unfortunately, there does not seem to be a "center of the road price gun" without buying a kit that costs close to $ 800.00 and then spending close to that amount to have it competently assembled. It would be great if Pedersoli made a gun of this fashion as you get a good gun that works in a medium price range, though often not absolutely historically correct to the smallest details.
I remember what it was like saving money to buy my first Pedersoli Brown Bess in the 1970's when I wasn't making much money. I was VERY glad I had done it, though, as I had a gun that worked though it needed some fine tuning.
If you decide the cost of an India Made gun is about all you want to spend, then you should realize there seems to be a wide range of guns that range from barely working or not working at all to only fairly good - depending on where you get the gun.
If you are on a modest budget, my advice would be to purchase a gun from someone like Earl Kathan who has a good reputation on this forum for working on flintlocks. He drills the vent holes and properly hardens the frizzens on these guns. Include the EXTRA cost of him test firing and hardening the sear and tumbler and doing the lock work. Then you will have a dependable gun at the lowest cost possible that won't drive you crazy with frustration.
http://www.flintlockrepair.com/flintlockmuskets1.html
Gus