Doesn't matter which hub you use, and feel free to set yup the bike however you choose...

BUT

You cannot set up a fixed wheel with a chain tensioner. Fixed wheels require the ability for either the upper or lower chain loop to be the driving (tight) side. That's not possible with a spring tensioner, and would tear apart a frame mounted fixed tension arm.

There was (is) one tensioner that could handle this. It was an adjustable, fixed distance device that rode between the upper and lower loops, and would rise and fall as the tension was transferred one to the other. A sliding arm attached it to the chainstay and kept it vertical.

If you cannot find or build a tensioner of this type, you have to either seek out sprocket sizes that serendipitously yield the right chain length, or stick to freewheel drive.