I'm a great proponent of "do it yourself"; however, there are obvious risks working with electricity and little knowledge. I would think that your best beginning approach, after researching the plans, would be keep your system simple and totally isolated from your DC system. It's best to keep your AC
wiring and distribution
panels at separate places than your DC system.
Essentially you will need to have the
shore power cord from the
dock supply at either 50 or 30 amp supply. Many docks have 50 amp only so you'll best have a "splitter" for your likely choice of 30 amps if your cruising to various docks. With the size of your
boat and your unlikely need to cook with
electrical appliances while running and air conditioner, 30 amps should suit. This
dock supply
power cord will fit to a
shore power outlet fitted to your
deck.
Marine catalogs will show various brands. Marinco and Hubbell are common brands. Your
power supply
cables on board should not be of the household "romex" type
wiring, but
marine wiring that will not be subject to breaking over time with vibration. This should lead you to a terminal or "breaker box" (distribution panel) that would supply your choice of circuits on board. All outlets on these circuits (maybe just two circuits for a simple system) should be with (GFI) safe ground fault interruption.
Care should be taken that your wiring system components are
weather protected, clearly marked, color coded and protected from moisture and abrasion. Connections marine terminal fittings and properly soldered. I'm a fan of Nigel Calder's marine
electrical texts.