Welcome Jesse; there are a number of good people here who re-enact. My own impression is typically that of a Minnesota soldier. Steven Cone does a splendid TN private soldier and others here are amply knowledgeable and probably more than willing to answer any questions.
As to gear I am a big fan of Chris Sullivan of Stony Brook Co. The consignment page is priceless and a I guarantee if Chris says it is right... he has based it off an original piece of clothing that he has carefully studied.
http://www.bridgemicro.com/msullivan/catalog/index.htm
If you are looking for a musket or rifle take a look at Lodgewood
http://www.lodgewood.com/ they normaly have an up to date consignment page but lately have been lax about updating it. Also the Regimental Quartermaster (do a quick google search) has a variety of high quality gear... though their prices are a bit erratic and frankly I prefer their "campaigner corner." I am particlarly fond of their de**** page where you can pick what model arm w/ what lockplate you want and they come w/ the stocks reshaped... an absolute must IMHO. Though a definate case of paying for what you get.
Stay away from places like Fall Creek, Coon River & your standard low end sutlers. You really do get what you pay for and the quality and service differences are enormous. If you are taking you time about getting outfitted go ahead and get outfitted in stages; it isn't quite so painful that way.
Good luck and welcome to the addiction...