I'd also recommend you to create an account at the JRS (Jolly Roger Squadron) forums if you have not done so already
Unless you want to do an Imperial Bridge Crew
instead (or in addition), in which case the detachment would be the Imperial Officer Corps
It is basically the same costume, the difference being that they allow different accessories. I'm in both detachments with all accessories.
3. Moncal has some wrongs with his suit; Four pockets on the legs, compad window is placed way far down,
and he is missing the double overlaying fabric on the back - and he will steal your money it seems.
Two different types of flight suits have been identified to have been in the movies. One pattern was used for both Rebels and Imperials in ANH and the other only for Imperials in ESB and ROTJ.
The "ANH pattern" had no point in the neck of the collar, four leg pockets with flaps and simple rectangular flaps on the pockets. The "ESB/ROTJ pattern" has the point in the back of the neck, only two leg pockets with flaps and all pocket flaps are chevron-shaped.
The CRLs do not recognise that there are two different versions, being preferential to the Imperial-only ESB/ROTJ pattern.
Mon Cal has expressed that his pattern is a combination of the two versions, made so that it could be modified relatively easily into one or the other. He gets suits made from the same pattern also for Rebels in other colours than black.
For the ESB/ROTJ version, you could rip the seams of the lower leg pockets to remove them. You might also want to modify the pocket flaps by ripping stitches, folding into chevrons and restitching even if the CRLs don't require you to do so - but you would need access to a sewing machine for that.
If I did my costume today, I would instead choose Cosplaysky, though. It is the Imperial-only ESB/ROTJ pattern with nothing to modify and which is preferred by the writers of the CRLs. It is also in a lighter fabric which is more accurate, where as Mon Cal and Wampawear both use a more rugged fabric.
Notes: Mon Cal has had multiple suppliers of the jumpsuit throughout the years, so an old review might not accurately reflect what you would get today. The comm pad pocket of the flight suits also differs between ANH and ESB... but a 100% screen-accurate comm pad pocket of either type would not show all buttons and may not be sized for the comm pad you get anyway.