I'm not familiar with the t206h if it is fixed or automatic wastegate...
Main thing is be smooth... If it's automatic then easy as - smooth on applying power - remembering as it makes boost after passing the n/a map limits it increases at a faster rate. Check map at full throttle during roll.
If fixed you can't apply full throttle and must set your required map without overboosting - just take some t/o's to get a feel for it and scan agin being mindful of the overboost light and map.
On decent you need to plan your power reductions remembering it may not coincide with your todpt. Inch a minute is a good rule of thumb... I used an inch every 2 minutes on some gear just depended on the Cp and sop's.
For the oxy as others have said - know the limits of the gear - chances are you'll spend moat of your time with it off but if it's on probably only upto 14000" unless your punters have oxy as well. Understand your limits as well as the system hypoxia can creep up on even the most seasoned guys. Always check the bottle ... Keep a stopwatch or a time for using it if you want. Include lines and flow bars as part of your scan. Hard to not have an escape route in Oz as we got no terrain but just be mindful - if in doubt descend no problems there.
Have fun you will enjoy it - no more advancing throttles in climb...
Cheers
r