I need help trying to decide which solution to choose to connect 2 LANs in separate rooms.

I have an ethernet LAN in one room. I want to have access to that network from another room (which will have another LAN). Here are some of the solutions I am thinking of using:

1. Have 1 wireless access point in the LAN and have one computer in the other room with a wireless network card and an ethernet card (RJ-45) acting as a router. The ethernet card will connect to a switch to which 2 other computers connect. This would allow me to have other computers (laptops, notebooks) using wireless network cards to access the LAN in room 1.

2. Have 2 wireless access points, one in each room, acting as a wireless bridge. If I go this route, would I be able to use a computer with a wireless network card to access either (or both) of the LANs?

3. Using a powerline network device. I just read about this option so I do not know how good it is. I won't have wireless access for a laptop or notebook computer, so that is a minus.

Are any of these solutions possible?

Which one would be the most cost efficient? Speediest? Easiest to setup? Convinient?

I don't mind complex setups or speed (as long as it is at least around 10Mbits/sec.). Keeping the cost down would be a priority, but if the difference is small, I would go for a more flexible setup (if available).

Any additional recommendations?

Sorry for the long message.

Thanks!