Need Help in Configuration

I just both Mikrotik RB450g Router. Please i need a help in d the Configuration as shown below

Ethernet Port 1 = WAN ( From ISP ) I will key in the IP address given to me from my ISP

Ethernet Port 2, 3 & 4 = Hotspot Ports (They should optaine IP automatically )

Ethernet Port 5 = LAN (Opent without any Security)

Please I need help form d Forum and I am please to give out my e-mail bach2003@gmail.com

Which IP addresses would you like to use?