That's really tough to answer, because what the men wore changed pretty drastically from 1594 through the 1740's. Much also depends on the part of society you are trying to represent.

If you're trying to represent a poor Highlander in 1620, then belt the plaid with a leather belt and simple buckle, find a very simple cloth of leather pouch with a simple drawstring, put on a simple linen shirt (NOT the fancy poofy-sleeved fantasy shirt) and go barefoot.

That's reasonably historically accurate. If you're trying to portray a Clansman Soldier in the 1715, complete with weaponsry, well, then it's gonna be a whole lot more complex and expensive.

If it's Fantasy Faire and forget accuracy, then wear whatever you bluidy well want up to and including thigh-high Pirate boots.