My last 365 days is 730 stick hours, not excessive.
Year 4 F/O hourly rate (max hourly rate) ATM is $188.93.
So 58K in 3 months is about 290 stick hours (give or take with passive and paxing credits, allowances etc).
Your 730 hours a year looks more like this:
$188.93 X 730 = $137,918.90
6 weeks leave = $15,913.72
6 training events = $4,534.32
Total is $158,366.94
So for your minimum of 200K a year you need to make up a 42K defecit with allowances, paxing credits (unlikely) and bonus (not guaranteed)....... or HOURS. (Unless you are including company super contributions in your total - that bumps it up a little).
Based on your 58K in 3 months and from my own experience 90-100hrs a month should get you there.
So yes over 200K is achievable, doing about 90 hours month in month out which is approx 500 sectors a year and 8 -9 days off every month and constantly chasing work/putting name in the book. IMHO the LH award gives you time off and guaranteed money and despite the jet lag is a better lifestyle option unless you're happy with the less hours (money) to get the time off in SH.
Edit: I should add, my last full year SH my bonus was paid at 1100 credit hours. Based on current hourly rates that's about 240-250K ( inclusive - allowances, passive and paxing credits and possible bonus but not super) a year but you work for it.