Well first, this is not as achievable as you think.

Marrying into money means meeting a partner with money which means spending money. You think they're gonna hang out at the local bowling alley? Like genuinely, just use this motivation to network and look for a job without linked in. That would at least allow you to make gains of either gender.

At the very least, you should multi-task. Makes you look less like a gold digger too.

Second even if you find a perfect partner. Unless they are rich rich, if anything happens you become a widow with no job history. You think a 21 year old with no job experience sucks? Try a 48 year old with no job history. That partner is going to be a single point of failure and even if you love eachother deeply, they will die someday, and it's not guaranteed to be when you're 90.

Also others have hit on this but you are betting on a partner. You have two competing interests, you don't want a monster, but you also want to be taken care of. Be... be very aware that the people you would be most worried about, are looking for someone with your goals, persuading someone to have your goals, and are gonna try to raise your need for safety, and lower your expectations.

In some ways... being honest with your goal can almost be ringing the dinner bell to a monster.