I have to agree with @djmuk, your post (and your other related threads Home network setup advice, VLANs and unmanaged switches) is more like a Request for Proposal than something that can be easily answered on a forum.
My suggestion is to use your “top floor” hAP ac2 as a lab router and do some playing with it (letting the RB4011 be its “ISP” that will provide the hAP ac2 with ip address via DHCP). It is unfortunate you didn’t get a vlan-aware switch, as you could then more easily play with vlans as well.
I am not aware of a book length free resource that covers a setup similar to what you propose using MikroTik. There is Mike Pott’s free Ubiquiti Home Network.pdf that covers something similar using a Ubiquiti ER-X, and the principles are the same no matter what the vendor involved will be, but the execution (how things are configured) is very different. It’s a bit like the difference between a program written in C vs one in Pascal, they may do the exact same thing, but seeing the implementation in Pascal may not be very helpful in helping you learn C syntax, although the “algorithms” and program flow may be very similar, and therefore may give you ideas for how to implement in C.