Many of the best bowlers on tour have day jobs and other businesses to support their bowling habit. There are even more people I have seen come and go live as either professional bowlers on the PBA or the local bowling alley hustler, and the outcomes I hear about are more often sad stories than happy and successful ones.
In essence, if you asked me what I thought, what I've been saying is, you're probably a good bowler, but I think you should still keep your day job. The numbers just don't add up with today's scratch bowling scene, anyway.
My personal bias is to use bowling as a form of recreation - like gaming, skill games, or gambling would be... because that's what "legitimate" tournament bowling is all about. You pay a fee, play a skill game, and hopefully you have what it takes that day to beat everybody else in the field.
You mention you average 230 in league - the new "bar" for professionals and league bowling is literally a 255 average these days. Those guys at the highest levels are just on a whole other spectrum. Add the variable that the top 5% of bowlers from your area and other areas will be competing at the same level as you now, and we all know that most "good" bowlers will transition the lanes much differently than it would at league. The advanced level of lane play and the way the field breaks down patterns are things most don't/cannot practice for.
Either way if you're going to "chase the tour," keep bowling as much and for as long as you can financially, emotionally, and physically support yourself. I can guarantee that something "challenging" will happen when you are chasing the show. The way you answer those challenges in life and sport will determine how successful you can be.
In the end whatever you do, keep it fun. Remember, recreational bowling doesn't mean it can't be competitive, too.