Pretty much yes to everything. Lol. Monthly expences, are what the are. No real idea. Say 300 gas and electric a month. Takes into consideration heat and ac. Ballpark. Sewer bill 150 a quarter. Food , well, is in flux, changes everyday, but nothing out of the ordanary. Health insurance is partly subsidized from former employer. 100k is before taxes and a pension. SS is never, though I will get the medicare part at 65, reducing my health insurance, but it will probably be the same cost by then. The other money is a 457b, i can draw on it immediately, but dont need to. Car insurance maybe 1200 a year.
Ok, well I'm sure others would say if they chime in.....you need a much clearer/concrete idea of your monthly expenses. I'm five years or less out from retiring and my DH and I could tell you exactly what we save/spend to the penny.
I also live in NJ, in a 1,600 sq ft house and I will tell you that my monthly expenses, less property taxes and homeowners (I'm assuming that's included in your 3,000 mortgage payment)....are $1,322 a month. We have no mortgage. I do have one car lease, but didn't include that in this number....just to give you an idea what it costs to run/maintain this house in NJ. It does not include groceries or any discretionary spending. That's utilities (natural gas, electricity, water/sewer), auto insurance on one car (a bit less than you're paying), umbrella liability policy, pest control contract payment, FIOS internet, two person cell phone plan, and
YouTube TV (not including any streaming fees....that's discretionary). I would also say to deduct about $125 a month from that....because we have an EV....which is bumping up our electricity bill, and we have a two cell phone family plan. So, let's round it down to $1,200 a month...pretty rough, but that far off.
So, if we take include the extra $600 you're paying towards principal....we're at *roughly* $4,200 for the house, utilities, a cell phone, internet, auto insurance, additional liability insurance. Add in the health insurance and we're at $4,800. That's not including any transportation/fuel, groceries or any discretionary spending.
The good news...other than your mortgage, you have no debt, which is great. A really quick look at a paycheck calculator has your take home pay on 100K at $2,950 month. However, you have one child, so you may have a benefit there....regarding withholding. No kids here, so no idea. Also, you mentioned that you aren't going to qualify for SS, does that mean SS (meaning FICA) is not deducted from your pension? If that's the case, your take-home would obviously be a bit higher.
On the generous side, we can say your net pay is $6,500-$7,000 a month....so that leaves you $1,700-$2,200 a month left for transportation, food, clothing and all discretionary spending. You have that extra $600 built into your mortgage payment which can act as a buffer....something that I'd encourage that you continue to do....but in a pinch you can rely on that. So those are the numbers that I'd consider if I was in your position.
The other big question....is what are you earning now? Because that tells us a lot as well. And I'm not sure what calculations you're using to determine that your 403B will be 700K in 10 years. That's another question to consider....sorry, more questions come up as I think about this.