"of .843mV @ 70 degrees and 25.02mV @ 1117 degrees. .... but it looks like it requires a 15V source. I would like to stay with a single 5V source"

To amplify a signal that low, you will need a very low noise amplifier. Such do not come in +5 versions but +/- 12/15 versions. A "cute" way of obtaining +/- voltage for a low power op-amp is to use a MAX232 with one logic tied low and one tied high.

Have fun, think noise, think noise.

Erik