lionheart
From the looks of things you need very little help here, you have certainly got yourself very well prepared - good for you!
I'm not really the best person to ask as to where the best place is to find consumables, sorry. Hopefully someone here, I'm sure, will be more knowledgable.
I am just starting out, though I have been in the industry for over 10 years I still have a lot to learn but learning quickly.
Just as a tip - though I'm sure you know - check out the consumables already in use, do your best to supply an equal quality or better - obviously companies would hate to change from something good to something....well, rather rough!

I seriously wish you the best of luck with your contract though I doubt you need it!