Separate WAN (internet) for guest wifi

looking to see how much of the following i can do with a single mikrotik.

most importantly there will be two wifi networks, regular and guest. regular wifi users access internet using ISP1 and guest wifi users access internet using ISP2 (both ISP are copper rj45 cat5 to separate modems)

other desirable guest network differences from regular network:

=> limit download speed to 1 megabit per second
=> use different DNS servers
=> disable internet access based on time of day and day of week

You can do everything you mentioned with a single Mikrotik device.

Never done this before. But you can do First, Setup a virtual WiFi for guest. Second, Route your wan to proper interface.
You can find how-to from Mikrotik wiki

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