your existing lugs on the car will work. TPMS can be found on ebay for $50/set 4 or less.
as far as tires, might want to check out nokian WRG2 SUV's...they're an all season radial that is winter rated. They work as good as blizzaks, but last much longer. we use ours on our minivan all year round, with 30k on them, they've got another 20k easily before they'll need replacement...and for winter tires, 225/60R18 might be better (a little narrower...narrower is better for snow/ice traction)
before you hit ebay, you shoulda checked out craigslist for 18" charger, challenger, 300C, and magnum wheels. probably could have found a set of winter tires and rims for about $500.
'11 Toxic Orange Charger R/T
'06 Dodge Grand Caravan
'76 Plymouth Duster