In my pics, that's basically what I'm wearing: keen sandals, web belt, kilt, R-Kilt sporran. You'll outdo yourself since socks and sandals are taboo. My sgian dubh is clipped to the web belt if you look close.

I wear a different t-shirts with that combo, I hope it looks a bit like your avatar.

Yes, Keen, and similar sandals, are the modern ghillies if you believe those kind of shoes were ever worn in an outdoor setting. Look at them.

I've seen the R-kilt hemp kilt and it's very cool. I'm seriously giving it some thought (in black).

I figure the kilt is timeless. Mine's an army surplus, probably from down by your way, I forget right now where the base is but it's not in PEI. I've got a couple of Eddie Bauer shirts that I wear with it when I want to dress up: short sleeve white, long sleeve white, and a nice OD vented. My work boot plan includes Doc Martens, go figure, so they are supplied on alternate years.

I guess it's the other stuff that sets the time period, not the kilt itself.