Not yet, as you haven't mentioned any nuts so far.

To answer your questions: You "only" need to earn an annual average of 300k HON miles a year to requalify for HON, not 600k. The requirement is 600k HON miles within TWO calendar years.

Also, to make 1K by flying F, you need more than 50k BIS miles on UA. The COS factor for F,A,C,D,Z fares on UA metal is only 1.5 with Mileage Plus, so you do the math. Please note that if you are flying in paid F (which, I understand, you are most of the time, so this really does make a difference), you'll earn MORE status and award miles on M&M than on MP .

If you only want the SWUs and really fly 50k BIS a year in F on UA metal, just get yourself the UA 1K elite prepaid travel card for $20k. You can pay down your UA flights with this card, you'll immediately get the 1K status and 6 SWUs, but you'll still earn full 300/350% M&M miles for all your *A flights in F, no matter which carrier. If some of your UA flights are operated with LH metal, this will also ease the pressure on your HON requalification, so you might actually find more opportunities to SPEND your M&M miles on award flights.

Doing this, you can still double dip with KrisFlyer for PPS as long as you have enough flights on SQ metal to qualify. So, in effect, you'll be a 1K, HON and PPS, but you only need to worry about your HON requalification.