Speedo... on a live aboard sailboat you can have just about anything you want. If you are plugged in at a dock while living aboard...there is really no limit as to what you can have since it is just like home and whatever DC powered stuff you have (like cabin lights) will be powered from your batteries which will in turn be charged by a built in charger running off A/C dock power.
In Texas...you will also probably need an air conditioner for living aboard and this is definitely a dock powered device.
If you are living aboard at anchor on the boat...you must have sufficient batteries to run the stuff you really need AND a way to charge those batteries back up as they run down. There are EXTENSIVE threads here on sizing battery banks and recharging and solar and wind power so you can slog through those and ask questions as you have more time.