Cisco Nexus to Juniper QFX5100 with 40 Gbps

I may have to source optics to connect Cisco Nexus switches to Juniper QFX5100 switches.

The intention is to use existing multimode fibers for some of the links, as well a single mode links for the other links.

For single mode, I've eyed these modules:

Cisco WSP-Q40GLR4L=

Juniper JNP-QSFP-40GE-IR4

They appear to have the same characteristics, SMF and LC connectors, using four different wavelengths in the 1300 nm range. They are rated for up to 2 km, which is plenty in this case.

Can anyone say for certain these will create link, or for certain say they are incompatible?

I've also looked at the equivalent third party generic part, apparently QSFP-IR4-40G.

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For multmode, there are a few options.

Cisco QSFP-40G-CSR-S

Juniper JNP-QSFP-40G-LX4

To me, this looks an awful lot like BiDi modules, which would be these.

Juniper JNP-QSFPP-40G-BXSR

Cisco QSFP-40G-SR-BD

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Same thing here, MMF fiber using LC (don't really want to deploy MPO cables). Also, same question as with SMF. Will this work at all? If yes on both options, is any one of them preferred? The switches are likely in adjacent racks.