WDS bridging question, plus ospf cost and priority

Hello everyone, my first post here. Great community and support. Just didn’t have the need to register till now.

So to the problem - in short I want this:

The 750’s doing some security, load balancing and redundancy with ospf, and everything else - transparent.

I’m thinking of bridging the two wlans on the 433 and including this bridge in two wds links on both sides. Is this possible, or do you guys have better ideas.

About the OSPF - I currently have some cisco 2821’s in my network, that would participate in the ospf routing with the rb750’s. My question is - are the cisco and ROS cost and interface priority the same, or is there any magic to get them to work together.

Thanks

Nevermind the wds bridging - took a closer look at the wiki and got it.

The OSPF questions still stand.

Also - what would the maximum distance with 2 SXT’s be with LOS and clean fresnel? Not interested in BW at all - just distance. I have some 2.4, 3.5, 9.2km links to build. I’d consider 30dB SNR a great number. Or am I overdoing it?

Using max tx power and rx threshold mikrotik calc says huge distances. Is this real?

Thanks guys