Pardon me for being useless,but make it the right height for YOU to work!
Start with either standing or choosing a stool,or even an office chair if that is what works for you.I suggest a barstool with your feet on the ground and a back support,but something else may work better for you.IMO,feet on the ground,there is a stool height that gives you good power pulling the press arm.
Hunching over is terrible for me.Does bad things in my neck and between my shoulder blades.I need to work with my head up.
I need for my eyes to be able to see what is going on in the press.For me,the dies somewhere near chin height would be a place to start.
If you are going progressive,consider some mount to risers,which may indicate a little lower bench.
You will have good leverage on a fairly tall bench,but holding your arms up 100 % of the time may get old.
I put bicycle hanger hooks up from below into the bench top and hang cutout laundry soap jugs or small paint pails from the hooks,one on each side.
I drop a hand down to pick brass out of one,pprocess it,and put it in the other.
Dropping my hand down is a moment of relaxation.It can be sustained .
So I'm saying,instead of asking for a number of inches,get the right stool you are happy with.Sit on it.If you can dummy something up using a couple of shelf brackets and a board,great!! Sit down,pretend to reload.C-clamp a press down,if you have one.
Find your own sweet spot.
Then tell us the best height for a reloading bench!!
A late thought: For your space,how would it be use vertical unistrut attached to the studs,going to the floor,at least 6 ft tall,better clear to the ceiling.
No legs in the way.Bolt top,riser,under bench shelf to unistrut.Height would be adjustable.
Do it your way,just a thought.
Another consideration,for a fairly small bench it might be good to have some form of "tooling plate"
In other words,you can have some standard size plates that could be aluminum or steel or even a good birch plywood,depending on the tool.You put a hole pattern,maybe 4 holes to correspond to 4 holes in your bench top.
You mount other tools to the plates,and the standard holes make it easy to attach to the bench. It can be as simple as 3/8 bolts and wing nuts to attach to the bench.
So,if you want to trim cases,you can mount your case trimmer.A second press? No problem.Sizer/luber for cast bullets? EZ.. Dillon square deal? Shot shell loader? This will also help prevent swiss cheesing you bench top with mounting holes over time.
Its like setting up a job on a mill table.