I have NEVER played in an all originals bands. VERY few are successful and living in the same town as the OP has shown me how difficult it is to get out and get your music in front of folks, get exposure and success. I've met and opened for many not-so-well-known touring bands.. nice folks.. but success is pure chance.. right song, right place, right hook, etc.
I'm too old to care about originals now.. I play in a pop-country band, most every weekend we're playing "A" country venues in the area, some of whom have up to 1,000 people a night show up! We've played some Festivals with 3-10 times that number in attendance. Then again, some are a lot smaller and 300 is a good crowd for a Fri/Sat night!
Either way, figure out how long it would take to get your "ALL" original music in front of that many folks, even with the pay-to-play, extensive marketing, etc.
We have about 6 usable originals and we play them each gig. I've played them in front of up to 5,000 people, and at venues where attendance was 900+ in ONE night . It's quite something to watch 400 people on the dance floor dancing to your song!! How many gigs would an average originals band have to do to get their music in front of that many people or get that many thru the door ???
Why would I settle for originals only ?? NO illusions of success/wealth. If it happens great. If not.. I'm playing next Fri/Sat night either way.. and getting paid to do so.
Gotta put it perspective folks.. and yes, ASCAP/BMI WILL be visiting your venue management to collect on their public performance license.
Meanwhile, keep playing!