Hello all, I'm new to the kilt wearing life and have some questions.

I have two Black Watch pattern kilts and one solid black. The BW kilts are for dressier occasions and my solid black is what I usually wear to the bars, downtown, shopping, basically anywhere. I wear nice dress shirts or polo shirts along with the black kilt belt and sporran of choice.

I'm usually warmly received by my fellow drinkers at the 'Irish' pub I go to in downtown Louisville (Kentucky, USA) and get the inevitable questions kilt wearers usually get.

I also participate at my renn faire/ highland games and there I wear my period shirt, baldric with basket hilt sword, targe (hand made, thank you), sporran (sorry modern design until I can buy a 1600's design one), either a solid black beret or a tam with a Black Watch pattern around the head band. And sadly because it's all I own, my lightweight BW tartan kilt.

Here's my questions on the Black Watch tartan:

When was it first produced as a pattern?

How far off am I from being dressed properly for a Scotsman form the late 1600's?

Can I get away with wearing a kilt and not a great kilt for this costuming?

Modern note. I'm going to a reunion and I plan on wearing the following:

Black Watch kilt, white dress shirt, neck tie (Black Watch pattern), cream hose with BW flashes, dress shoes (hopefully brogues if I can find them), sgian dubh, dress sporran with chain belt, a black Prince Charlie vest and MAYBE a Black Watch fly pinned to the shoulder. Yes? No? What do I need to lose/add?