Just my opinion, but the MD method is actually more complicated than the other two methods and because of the annual re-calculation it could also lead to more errors.
In addition, it would be no less subject to an audit than the other two methods and since it would show a distribution that would change annually, it could be more subject to an audit.
The advantage to the amortization method is that it results in the greatest distribution and requires the least amount of the total IRA account. The amount, once calculated, remains level through the life of the plan - nothing that requires an annual calculation.
If you understand the rules and regulations of starting and maintaining a 72t, you CAN probably do this yourself. If not, it could be very costly if an error is made.
After reading and following this forum for quite some time, I set up my own SEPP Plan 4.5 years ago. I did as KEN had suggested in his response to you. Using the reverse calculator, I arrived at an amount that would be needed to fund my SEPP IRA account. I then separated my original Rollover IRA in two (2) separately-identifiable accounts (Also with Vanguard), one to cover my SEPP payments and the remainder was left in the other account if needed for an emergency (which hasn't been necessary as yet) .
Also, after 3 years I did make the one time switch to the MD method because I no longer needed as much from the IRA since my husband found a small part-time job. This is one instance where the flexibility to make the one time change to MD comes into play.
I suggest you start by figuring out how much you will need for the next 5 years and use the reverse calculator to determine how much you need to put into the SEPP IRA Account. Transfer that exact amount to a NEW account# and use that as your starting balance. As Ken stated if things change down the road and you don't need that much, you can always change to the MD method. Remember by starting out with the MD method you cannot make a change to one of the other methods. Also, there's a chance you could get less in subsequent years lower balance and/or lower interest rates at the time of recalculation.
My SEPP is set up with Vanguard and was set up in less than 10 days. I transferred the money on 1/4 and made first withdrawal 1/13 so I think this can be accomplished in your time-frame, but please do your homework before setting this up.
One other note on your original post. You said you would STOP January 2015 and NOT take ANY amount under 72t rule. That is probably okay to take nothing, but I don't think you can take just any amount between Jan. 2015 and your ending date which would be sometime in July 2015 even though you will be over 59.5 at that point, but that later of 59.5 or 5 years has not ended until July, 2015. I would hate to see your plan busted because you made an unauthorized withdrawal after 59.5 but before your end date. Others can comment on this and give you specifics about withdrawals in your final year.
Whatever you decide KEEP GOOD RECORDS.