Period Worship Service

I do not know if any on the blogosphere are Civil War Re-Enactors but I am looking to put together a Reformed worship service for the Gettysburg Re-Enactment over the July 4th weekend. At nearly all Re-Enactments I go to the only options for Lord’s Day Worship is a Quasi-Pentecostal or some even have RC Mass. So for this reason I am trying to organize a morning service that will allow the non-Pentecostals a place to worship. I am looking for anyone who might be there and would attend or if you would like to help organize/lead with me.

I am also looking for ideas from the blogosphere on how/what/why I should go about it and any advice you may have. I am planning on singing Psalms and giving an expository Sermon and would like advice on what you think would be best.

Thanks again,

Backwoods Presbyterian