1) Blues are pretty loud but it shouldn't be an issue as long as you have the room to yourself.
Here is a video of blues: they are quite loud but some people like it
2) Browns are awesome, the have a "clacky" sound instead of the blue's "clicky" sound. They are just as light to press as the blues (i believe they have the same actuation force). Browns are also great for typing or gaming imo.
3) Sorry don't know much about linear switches (reds) but sounds like blues or browns would best suit you.
I would go with blues if you like how they sound and have a room to yourself. Otherwise browns are also a great switch. If you do decide on blues, I would go with the older poseidon (non Z series), since they use the more reliable and trusted MX blues. http://www.newegg.com/Product/Product.aspx?Item=N82E16823162028
Or you could go with the CM Storm quickfire TK, which comes in browns or blues. I have the quickfire tk in browns and I love them (they were my first mech keyboard). Just keep in mind that the TK is semi-tenkeyless and has the numlock switch between the number pad and arrow keys. Takes some getting used to but I love it.