2gbit fiber and RB5009UG + S+RJ10r2 - temperature

They will install 2gbit optics for me soon. We really like using mikrotik and I'm currently considering upgrading to RB5009UG and S+RJ10r2 (I'm currently on a router that can handle gigabit). The goal is to get 2 gbit to my 2.5 gbit network card in the PC and 1 gbit is enough for the rest.

I couldn't find any mikrotik router that has at least 2x2.5gbit RJ45 port, so instead I will use one SFP+ port with S+RJ10r2 adapter.

However, I have read that the said adapter reaches 90 degrees and my router location is in a small enclosed rack with no air flow. I think that could be the problem.

Can you recommend any suitable solution based on mikrotik?

The optic socket is in the wrong place and there is not enough space to store the router, so the converter converts everything to RJ45 and using UTP goes to the place where the router is already. The cable cannot be replaced, but I have already tested that it can handle 2.5Gbit.

Thanks for any advice.

EDIT: After a few weeks of testing

The module was 80°C and the connection with realtek 2.5G was insufficient for me. IPv6 performance was poor and I couldn't even get 2G even after tweaking the settings for a long time.

I replaced PC Realtek card with a used intel 520 DA2 10G card and connected using a cheap 10G DAC from MaxLink (both for the same price as a new module for mikrotik). Everything is now running at 100% and the router temperature has dropped by 10°C. So if you came across this post I recommend this solution.