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I have the Spartan Games Sharpe's rules. It's a lighter smaller scale and tries to emulate the feel of the books/shows of the Sharpe's Battles series.

I have some old Ral Partha 'hindus'? from The Sword & The Flame rules from the 80's. Sharpes Tiger is set in this period.
But I need Brits & of course later on French. Foot & cavalry and officers and maybe some arti.

What do you recommend?

I don't know too much about the minis that you mention but I do know that wargames factory has some nice sets for relatively little money that might help you out.

Sorry admins if I am not allowed to mention a non advertiser or not. You can edit or delete my comment if you like or need to.

No worries.

Perry Miniatures, Warlord Games, and Victrix Miniatures are doing an assortment in plastics now. I'd check out the respective sites to begin with.