Is my future value calculation accurate?

I’m a 27(M) federal employee with 105K in VOO, 55K Roth IRA, 35K Roth TSP. I will max my Roth IRA until age 60 but will only be able to max my Roth TSP for 15 more years, then letting it ride until 60 (I’m retiring/starting new career after 20 years). I will maximize all future contributions and did not factor in employer matching contributions of 5% for my TSP in the calculations below. I also have a 529 with $8K for my kids I don’t have yet and $40K in savings. Currently make $106K per year 25% tax free. After all retirement contributions and monthly expenses we save $2K per month or $24K per year. I chose 10% based off S&P historical average.

VOO:
33 periods (N) (years) with $105K Present Value (PV) at 10% (Let me be optimistic) with 0 Periodic Deposits (PMT) = $2.438mil

Roth IRA:
33 N with $55K PV at 10% with $7K PMT at the beginning of each year = $2.988mil

TSP until age 42 (Retirement):
15 N with $35K PV at 10% with $23K PMT at the end of each year for simplicity (actually divided into 26 pay periods each year) = $877K

TSP from age 42 to 60:
18 N with $877K PV at 10% with 0 PMT = $4.876mil

Spouse Roth IRA:
34 N with $25K PV at 10% with $7K PMT = $2.528mil

Pension:
I will opt in for a 50% lump sum portion of my retirement pension from age 42-67 (I’m in the BRS) = 40% of my high 3 (Roughly $15K by year 2039) = $6K per month x 12 months x 25 years = $1.8mil before tax (About $1mil after tax). PLUS $3K per month for the other 50% of my pension from age 42-67 = $900K. Let’s call it 2 mil up until age 67 then $6K per month for as long as I live.
I’m only factoring the $1mil upfront here for the total below.

*** Disclaimer: I know inflation will increase everything, I’m talking solely PV.

What am I forgetting? Is this a reasonable calculation?

$14,707,000