Accessories/Supplies for 2 chinchillas?

Hi, so this/next week I'm planning to get another chinchilla. I need to know if there's supplies are enough to make them comfortable. Here are some of the things I will have when I get my second chinchilla, they will be sharing a cage:
2 Marshall Pet Ferret Leisure Lodge (15x14x11) or another type of sleeper/hideaway product.
2 PETCO Nylon & Plush Hammock For Ferrets (17x17)
2 Chin-chillers (10x 6x.25)
2 Super Pet Crinkle Tunnel (23 inches long, 6 inches in diameter. One in the cage and the other one will be outside used during their out of the cage playtime)
Flying Saucer (13 inches in diameter.)
2 Potty box
Food bowl/bottle, should I have two of each or just let them share?
Loads of applewoods and chews.

2 Marshall Pet Ferret Leisure Lodge (15x14x11) or another type of sleeper/hideaway product - Not a fan of Marshalls. They are a puppy mill for ferrets. You would be much better off with a wood house made out of kiln dried pine. If you're handy with a saw you can make them yourself, and it will cost about $4.00.

2 PETCO Nylon & Plush Hammock For Ferrets (17x17)
No nylon and plush for chins. If you want a hammock, they need to be made out of fleece. No material is completely safe for them to chew and ingest, but they tend to chew through the fleece, rather than eat it.

2 Chin-chillers (10x 6x.25)
Good product, but cheaper to just go to Lowe's or DIY and buy yourself some ceramic tile. They work the same way but less costly.

2 Super Pet Crinkle Tunnel (23 inches long, 6 inches in diameter. One in the cage and the other one will be outside used during their out of the cage playtime)
Not for cage time or out of cage time. First, they will destroy them and it's a waste of your money. Second, they could easily overheat in them. You'd be better off getting some pieces of PVC pipe that you link together in short bursts to make a kind of maze for them to run in. You can also use PVC in the cage, and a lot of people cover them with fleece to make them comfy to lay in.

Flying Saucer (13 inches in diameter.)
If you bought this from a pet store, you may as well return it. Your chin will either destroy it or break it. They are incredibly poorly made. It will cost you more, but they will last forever if you buy either a flying saucer (which a lot of chins won't use) or a wheel made out of metal. Either of these two are what are most recommended amongst knowledgeable chin owners: http://qualitycage.com/index.php?main_page=product_info&cPath=1_19&products_id=1802 or http://qualitycage.com/index.php?main_page=product_info&cPath=1_19&products_id=1803

2 Potty box
These are fine, but if they are plastic, they will get destroyed. You would be better off finding someone to make a metal one (with folded edges) or use a heavy long pan, like a Visions pan or heavy glass casserole dish so they can't throw it around and hurt themselves.

Food bowl/bottle, should I have two of each or just let them share?
I don't recommend food bowls. They always end up getting peed in and pooped in. Hanging feeders are a lot more sanitary and easy to keep clean. As far as bottles, I only recommend glass. Plastic can absorb and harbor gers and you cannot scrub them out no matter how hard you try. Glass bottles you can boil and sanitize.

Loads of applewoods and chews.
Excellent plan. Treats are not needed or healthy for your chin, and if you offer them, they should be in moderation. Wood on the other hand is something you can give unlimited quantities of. Here is a link to chinchilla safe wood: http://www.chins-n-hedgies.com/forums/showthread.php?t=34

and here is a link to a suppliers list where you can find pretty much everything you will need for your chins. The last post on the page is the most updated: http://www.chins-n-hedgies.com/forums/showthread.php?t=546&page=2

While you're there, you might want to consider joining the forum and becoming part of the forum community. People don't realize that there are many chinchilla obsessed folks out there, just like themselves, who are thrilled to share stories and pictures with. It's also a great community for if your chin should become sick and you need help or just need to find a vet. You do need to be 14 to join, due to COPPA and forum regulations, but you can read all the forum whether you join or not.

Congratulations on your new addition.