Overall the size should be workable.
A longer torso person would be able to have a 'longer' frame, as long as the seat position can be met (large frames tend to have a lower, more angled Seat tube, slightly...
for some like me, v-short torso, v-long legs,arms a larger frame can create 'reach' issues (which don;t really bother me...)
so, what I see is a very 'race' type geometry for the main triangle - a quick compare with a Spec Tarmac SL7 (very much a race oriented machine) shows the 54 Midnight Special to be very close if not more 'race' (HT length) than the Tarmac.
How is that adapted to a more 'rec' type fit? The very up-angled, relatively short stem, and a bunch of spacers under the stem, which raises the 'stack' some.
If the current setup works for you, then great.
Can I tell you if it works ? No I can't ... that really depends on you, how you ride, you desires and expectations, etc...
Can a professional Fitter tell you how it will be/work? I don;t think so. What they can do is look at your body geometry and try to put you into a 'position' which their system recognizes as the optimum for performance and maybe comfort, from data gather in studies they ascribe to...
Can a Pro Fitter help? Sometimes... They might help where things are quite out whack for you.
What I think might work is also in question - which only you can answer.
You're asking BECAUSE you have doubts if the bike will 'fit'? Or have you already ridden it and have found things which don't feel 'right'?
my opinion is that the bike can 'fit', but is also on the very smallest of frame dimensions For someone your size.
Ride On
Yuri