Would Wargames Factory War of Spanish Succession work? They're intentionally produced to be cheap rank figures, which are standard enough to be converted or used as most countries in the conflict - (1701-1714 if my memory serves?).
They have cavalry as well, and have suggested artillery might be on the way. Either way, $16 USD for 36 multipose plastics is a pretty damn good way to start. Includes some figures with halberds, swords, drums, mitre caps or normal etc. Pretty good box set. I was on the fence until I ordered some myself.