Ceiling Planning/Layout

[NWOhioChevyGuy]

In the process of laying out my ceiling.

Shop build starts Monday 6/22.
40x64x16 building - Metal liner ceiling
Question on ceiling fan placement.

Lighting will be 10 - 200W Hyperlite Hero's spaced in two rows 10' from side walls & 12.8' between them, mounted @ ceiling height.

Heat will be a single radiant tube heater down the center of the building.

I want to place 4 High Volume Low Speed ceiling fans to circulate air, mostly for winter heat, but some for summer air circulation.
The question is will 24" down rods cause "shutter" effect if placed between the lights?

Say if I do 4 of these https://www.overstock.com/Lighting-...RG3ZIBAQGFO3XZG3U&option=90944474&searchidx=1

 

[jack stand]

I'm not sure if radiant gas tube heaters require the same as a hot air heating system. (Push down the warm air)
My only experience with radiant tube is in a HD checkout area where it is radiating like the sun and seems very effective without fans.
In my last shop with the hanging "modine" type air heater is that what is comfortable air temperature for a shop (55*+/-) has the feel of a cold breeze with 60/70* air blowing across you. Very uncomfortable.
Hopefully someone will jump in here with a scientific answer to the term radiant.
I'd put in the fans more for drying a "dewey" floor or cooling purposes.

 

[NWOhioChevyGuy]

I'm not sure if radiant gas tube heaters require the same as a hot air heating system. (Push down the warm air)
My only experience with radiant tube is in a HD checkout area where it is radiating like the sun and seems very effective without fans.
In my last shop with the hanging "modine" type air heater is that what is comfortable air temperature for a shop (55*+/-) has the feel of a cold breeze with 60/70* air blowing across you. Very uncomfortable.
Hopefully someone will jump in here with a scientific answer to the term radiant.
I'd put in the fans more for drying a "dewey" floor or cooling purposes.

Yeah my fathers shop, which is smaller and stick built has a radiant tube heater, and it heats nicely without fans.
I guess my reasoning could be flawd but that is where my head went.

I'm not doing any windows, so the fans will be the majority of my "cooling" if you want to call it that

Circulation for moisture control is a bonus also