The single most important things are to wait for the GPS receivers of the TH and ST16 to acquire enough locks, and to NOT take off in SMART mode, or the TH will immediately try to put 25 feet of distance between itself and the ST16. This has resulted in cases where people have crashed their brand-new TH within the first few seconds of their very first flight.I'd fly it without updating for a while. The current firmware is good and shouldn't give issues. Don't overlook reading the manuals and viewing the instruction videos on YT. Sounds like you have plenty of experience and shouldn't have difficulty with updating. Just be careful to follow the update instructions closely. Welcome to the club and good luck!