guys...are we ready?

Me and my partner are finally looking at buying. We have been pre approved with a few different options.

1. 700k purchase price, 10% down, 30 year amortization, 3 year fixed at 4.14%, monthly payment at $3146

2. 600k purchase price, 10% down, 30 year, 3 year fixed 4.14%, monthly payment $2539

We currently have $125k saved and our take home pay after tax is roughly $7200 a month. I make $28 an hour but will get substantial raise every year (union plumber) and will be making $55 hourly in roughly 3 years. Partner makes $36 hourly, and has set raises each year for the next 5 that go up a few thousand each year.

We have 0 debt, paid off cars and our current monthly expenses are:

gym $50

car insurance $250

gas $150-200

subscription $30

phones $130

Additional total: $600–650/month

We estimate property tax at $350-400 a month

Home insurance $125

Hydro $125

Water $100

Nat gas $100

Internet $80-100

Total estimated monthly cost: $850–950/month

I know we left out other finds such as entertainment. house improvements etc but I am just trying to first determine the 100% fixed costs.

Being a service plumber/gas technician I can handle most repairs myself. Water heater, furnace, softener etc I can get dealer prices so other big things that would be the most worrisome are roof, foundation etc.

The only other big unforeseen expenses are eventually a new car. I get a service van for work I can drive around town, my partner has a 2013 ford focus that could have months to a few years left and worst case I have a 2006 RAV 4 with about 130k on it thats in decent condition if her car went.

I am sure I am missing things, probably ignorant on utility costs but that's why I mad the post as I need some help/advice/insight! Thanks guys