Buying a ~$600k house at 25
I'm seriously considering buying a house in the $600-$650k range with my fiancé (Covid has postponed wedding plans for now). We are both fortunate to have $0 in debt, are able to max out our retirement accounts, and both have "well paying" jobs so can easily cover income ratios in that range. Also are fortunate that both of our jobs are secure for now and no indication of any layoffs at either of our firms. We have ~$325k in cash that can be used as a down payment (both sold a lot of stock recently, feeling bearish).
It's hard to determine if "just because we can afford this much house" this is the right move. Feel anxious having a lot of cash on the sidelines but also don't feel too optimistic putting a lot back in at the moment, so putting a "large" down payment doesn't hurt as bad. Think we would aim to put around 30% down.
Wanted to get some outside opinions on buying a house at a young age and see if I'm over looking anything, namely, is this too much to spending at 25, thoughts on how much to put down, anything else I should look into?
Any general comments/suggestions on the home buying process would also be appreciated. Also, no need to comment on mixing finances with my SO, that ship has already sailed.