cargo van project for a rookie

hi guys, i am new to this site so please be kind

hoping that some of u guys can help..

first of all i just wanted to say that im from dublin ireland and i cant find any installers that are capable of doing what i would like...

i have a cargo van which i am coverting the cargo compartment into an entertainment lounge...thats all i know at the moment...lol.

i am looking for some guidance as to how i can install a 32" lcd tv, dvd player, basic sound system and a computer
so that it runs off a second battery...

also i dont know if i need to covert 12dc to 240ac as all the devices are made for 240ac power supply...

any help would be greatly appreciated...suggestions also welcomed.


thanks
charlie21

guys i should also mention that the link i have provided is for the vehicle that i have.

the alternator produces 150 amps and the van is new!   https://www.nissan.ie/vehicles/commercial/primastar/specificationsL1H1.asp?displayAll#topOfPage