I've been playing some HT's again recently...and it seems like this might be the best way to go about it.  I see quite a few SNEs there. 
I know the variance is high in them, but if you can 24 table cash games well....I think it could take a considerably less amount of time in HT's.
From my numbers, it looks like you can one table 8.8 HT's in one hour.   
1 million VPPs/365 = 2739.73 VPPs/day .... *7/5 (so you only 'work' 5 days a week) = 3835.62 VPPs/day required.
At the $74 dollar level, you rake $1.45.  $1.45 rake * 5.5 VPPs/$1 rake = 7.975 VPPs earned.
3835.62/7.975 =  481 tourneys/day at $74 level.  
If you play 8 at a time: 481 tourneys / (8 tables*8.8 tourneys/table-hour) = 6.84 hours a day.
If you play higher stakes, this will cut that time dramatically. 
Is my math correct on this?  Wished I considered trying this in December.  I'm flirting with the idea of still going for it this year. 
I'm wondering...don't you get tired/fatigued playing 24 tables?  How do you deal with that?  How many days a week do you play?  What is a typical day like - (eg. in regards to hours played/breaks/study/etc?).  
All in all....pretty sick what you're doing...good luck at the tables