Just as an aside, as someone who hasn't done the tournament thing except once (it's so hard to get in these days) and just finished my first singles league, why are you targeting getting a certain number of points?
I think they play some role in making you eligible for Worlds, but past that I'm clueless.
It is for Worlds. Each sanctioned tournament you play, you earn points, for each player you beat or tie. There are multipliers for divisioning and tournament tiers. Each division has a point threshold set, by the PDGA, to earn an invitation to the following year's World Championship.
My quest is to play Masters Worlds next year in Flagstaff AZ. I generally will play my rating, in AM3 or AM2, to gather those points quickly and early in the season. It is a longer venture to earn points in MA50+, as they rarely have more than 6 or so players in the division. Moving to a division with 20-30 players gives me a better chance to beat or tie more players....more points. Larger, multi day, three round A Tier events offer bigger fields and higher multipliers on my points.
Now, that my points are out of the way, I pick tournaments based on my pure enjoyment.
Michigan Amateur Open - a tournament run by a good TD. Brings in food, beer and refreshments for a Sat, post round player party. The event is two 21 hole rounds, one Sat and one Sun. Each with tee times. I really enjoy the course and do not get to play it often.
Michigan Masters - MA40+ and above only. TD is a terrific guy, providing a potluck type lunch, trophy only, one day/two round event. Getting to see, hang out with and catching up with a ton of the best generation of golfers, makes this a do not miss. $10 entry. Also on a challenging course I do not play, but once a year.
Just a couple examples of tournaments that might not fit into my schedule if I was seeking purely points. Getting points early also means more time playing in the divisions I really enjoy.