Blitz Thunderlungs

So, I want to get into wallet making. My plan is an 8 oz veg tan outside that I tool. What is a good cheap (Not Genuine leather) thin leather to cut the individual card pockets and interior of the wallet out of. Want thin so the wallet can close easily. Basically I don't understand all the leather cuts and terms. What's the cheap thin cut of chrome tan, or is there something better I should use? (asking all you wallet makers out there.)

Forgive the picture. This is the only Antique stain I have messed with. (like I said I just started leather craft this month.) So far I have been limited to what remnants they had available to Hobby Lobby and buying a shoulder in any color that I cant see before purchasing is intimidating to me. Thank you all for the advice.

That was plan B for me. I was hoping someone had some sort of magical chart figured out. This dye, with this chrome tan sort of thing. Thank you.

So I want to make some bible cases. Im ambitious and like to bite off more then I can chew. With that being said I want to do a nice tooled veg tan cover on the bible case with the rest of it thinner, softer chrome tan. What stain and what color chrome tan should I get to make these two different leathers look like they are the same project. Also I live 5 hrs away from the nearest leather supply store. I have to order everything online. Specifics will be appreciated.