I think the 6094 is bigger than the jpc... check out the threads on the banshee
1st thread bigger guys are talking about it, 2nd thread small guys are talking about it, but it's about the same size as the jpc since the plate is the deciding factor on the width. I think those are the smallest PCs you're going to find... they don't get much smaller. The banshee without the cummerbund I think is pretty damn small.
Also if you're budget limited:
If those don't fit you... you'll probably looking at some specialized realsteel stuff which is going to be a lot pricier.
blueforce gear plate minus maybe? it's not cheap.. 350...
You may also be restricted to chest rigs that you can wrap the straps around you a few times lol.