Irish twins?

Ahine • Cake decorator, stay at home mommy to two and bad ass feminista, and makeup obsessed https://www.facebook.com/thevintagemixerbakery/
I'm 23 years old and pregnant with my second and my first is 4. I watched how my 4 yr old gets so lonely and gets bored hanging with just adults (we've tried taking him to parks and indoor play places but we live in a rural city so things are far) I was wondering does anyone have Irish twins? Kids super close in age? If so what's the good and the draw backs, we almost want to stop at two since we're scared of not being able to afford fun things for them i.e. Trips and such. But I would love to have my little ones bond