Trying to build a custom case

I want to take an old paintball gun case and add in a custom security system. I want to hold my laptop and accessories and essentially the case will become a "mobile command center" as it was so lovingly termed by my wife. I want to add in a secure door keypad and some sort of locking mechanism to hold the lid of the case shut until the code is entered. I have the case, and have picked out a few parts, but I am unsure if they will work together or even how to get them too. That is why I am here.

Similar to the case I have:
**broken link removed**
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Keypads:
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Keypads (Last one)
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Power:
Smith-Victor BP2 Camera Light Battery - 662100 - Buy.com
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Compact Size 12V DC 1800mA Li-Ion Rechargeable Battery pack
S-3001 Digital Portable Power Pack 5.5V, 9V, 12V DC output

Solenoid thingie: (What is the difference between continuous and intermittent in regards to these solenoids?)
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Electroswitch Inc. - C8-141012DC-AY - Allied Electronics
Electroswitch Inc. - C12-241012DC-AY - Allied Electronics

Bump. :/

I dont know if that is allowed, sorry if it isnt. Just need help picking some parts!

Have some sort of a way to activate the circuit in case of battery failure.
You wouldn't want to have to cut into that nice case.

PatM said:

Have some sort of a way to activate the circuit in case of battery failure.
You wouldn't want to have to cut into that nice case.

Click to expand...

Yeah I had planned on trying to find a way to be able to plug it in in case of battery failure. If I used some sort of rechargeable battery with a retractable cord built into the case with the plug external, I think that would do the trick. I was thinking a RC vehicle battery or something to power it all. My main issue is the keypad and getting it to work right. I want to use the cheaper "matrix" type keypad I had linked, but I am unsure of how to get it to accept a 4 digit pin to activate the solenoid. The original idea stemmed from the link below which is a from scratch RGB keypad for an interior door in a building. I realized that it was far to much work for what it is worth and going with a pre-made keypad or whole system like the enforcer was a better idea.

How-To: Make an RGB combination door lock (Part 1) - Hack a Day

I can imagine the headaches if you try to take this on an airplane.

No plans for that. Just for daily around town use. Work and back and customers houses and such.

You shoot your customers with a painball gun???