For me the QF status rules are quite simple. If you want to look at something complex look at AA status rules, with various measurements of elite qualifying & $ spent or distance flown.
For P1 from
https://www.qantas.com/fflyer/dyn/flying/status-credits
3,600 (at least 2,700 on Qantas marketed flights) *
<snip>
* Qantas marketed flights are flights with a Qantas (QF) flight number on the ticket.
+ For the purposes of the Loyalty Bonus, the Status Credits earned must be from eligible Qantas or Jetstar flights (JQ, 3K, GK and BL) within a single membership year. Loyalty Bonus can be earned up to four times each membership year, to a maximum Loyalty Bonus of 32,000 Qantas Points or 200 Status Credits. If selected, Loyalty Bonus Status Credits do not count towards attaining or retaining Platinum One status. The Loyalty Bonus reward must be selected within 90 days from the date a member achieves the Loyalty Bonus. Once selected the reward cannot be changed.
What extra will P1 do for you that Plat does not?
Anyway if you have got Plat in a few months I would be looking at status with another OW airline like AA, or maybe even AS, depending on your flying pattern. For awards earn to burn is a lot better (with few or little surcharges).