When wiil this person be able to replace his engines on a bunch of smaller ones to attach them on clothes? That is the real question that bothered me.
 UK 'Iron Man' suit
From the outlet cowling and nozzle, it they look to me like 6 standard RC jet engines (JetCat or so; JETCAT P200RX, for instance, has about 50 lbs of thrust, so in the right order of magnitude).

I don't think there would be any benefit whatsoever to using many miniature engines.