BLUDAWG ^^^^^^^^^^^ BLUDAWG
Your first time should as simple as it can. Bludawgs hot and fast method with just Salt and pepper is as KISS as it can get with awesome results.
Also dont worry too much about maintaining an exact temp. 290-325 is all good the temp will settle in.
Q-ING on my: PBC, Weber OTG & Cookshack Smokette - Temped by Thermoworks TW-8060