We should reach 2.5M by 2021, it is possible we'll see 8 figures and still retire at 52. Hope to spend about 60K annually. Here's what simplified FIRECalc says.

FIRECalc looked at the 119 possible 30 year periods in the available data, starting with a portfolio of $2,500,000 and spending your specified amounts each year thereafter.

Here is how your portfolio would have fared in each of the 119 cycles. The lowest and highest portfolio balance at the end of your retirement was $2,500,000 to $17,820,987, with an average at the end of $7,936,852. (Note: this is looking at all the possible periods; values are in terms of the dollars as of the beginning of the retirement period for each cycle.)

For our purposes, failure means the portfolio was depleted before the end of the 30 years. FIRECalc found that 0 cycles failed, for a success rate of 100.0%.