Setup 2 Dynamic IP WAN for 3 LAN ports

Hello, I have a RB2011UiAS-2HnD-IN version 6.42.7.
I need to configure it in the following way. ETH1 port will connect a cable modem bridge mode, the ISP uses dynamic IP. An ADSL PPOE modem router mode will be connected to the ETH2 port in , the ISP uses dynamic IP. At that point I do not know if it suits me to configure it as failover or as load balancing. Help!

On the other hand, the EHT3 port must be connected to a gigabit switch. All clients that connect to that switch must be in a network in the 192.168.0.1 range.
ETH4 and ETH5 ports must be connected to 2 WIFI APs and the equipment that connects to them must be in another network, for example 192.168.10.1. Could you tell me how to do it in the simplest way, if it is using Winbox even better? Thank you very much!!!