Rackmount Amp Cooling

[demorior]

Hi guys. First post!

I'm currently in the middle of picking out the parts for my first rackmount amp setup for live use.

I'm currently looking into getting a Laney IRT Studio
and possibly a Carvin TS100 to use as the power amp (open to suggestions in regards to good poweramps to pair with the Laney btw)
been a tube amp player all my life but I'm open to the idea of SS poweramps

I've read that Laney recommends to leave a 1U space above and below
the IRT Studio due to its heat production which concerns me cause ideally I would like to use a 6U rack. so....

1U power conditioner
2U IRT Studio
2U TS100

So i have a couple questions:

1) If I'm using the IRT Studio just for its preamp section into a poweramp
do the power tubes in the IRT Studio still heat up?

and

2) In order to save space, would you guys recomment buying a 1U
rackmount fan possibly in between the IRT Studio and the Carvin TS100
instead of the recommended 1U space above and below the IRT?

Thanks!