I would use 14ga or 12ga all around. This will handle whatever you throw at it. More than enough. Remember small number =fatter. And the best termination is always bare wire ends...connectors/tips are convenience only. But I'll let you decide. Regardless of termination or not, never let pos/neg touch. Never.
Impact Acoustics Sonic Wave series (commonly called interconnects or ic's) are very well built high quality cables. Don't purchase through Impact site though...Parts express sell them for less! trust me. Confused about cd/dvd player or players? Seperate components? Regardless. I'm sure you dvd plays cd's as well. If you do have seperate components for dvd/cd listen and determine which sounds better. If dvd is better cd player...trash the standalone cd player. Makes setup/life more enjoyable. Believe me, been doing this 30+ yrs. Otherwise as follows.
Purchase list: For DVD player
1 digital coax cable (this will carry all the multi channel audio whether it be a movie, concert, and 2ch music when Yammy is in 2 ch stereo mode playing cd's)
1 subwoofer cable...consider running it around baseboard edge if possible. Then again, I don't know your setup.
1 s-vid cable. Is this your highest/best possible vid output of player? If so, use it. Strongly consider an Oppo for all your dvd/cd needs. One little machine to do it all...nicely.
Carefully plan your rig setup...buying the length you need so you don't have all this extra cables laying on floor in a jumbled mess. If memory serves me well their cables are available in 1, 1.5, 2, 3, etc ft long. This is great because most often your cd/dvd player is near preamp/recv'r and you don't need 3ft...just 1.5 or 2ft.
Post back with your results...nice to help someone get up and running. I have to warn you though. You will be hooked if not already.