Stuck on purchasing studio monitors

Hello, I’m an amateur deep house producer (and I do some UK garage) and I wanna level up my productions. I currently create, mix and master with headphones and I wanna change to studio monitors. I have a budget around $200-400 for a pair and I am considering the KRK G5 5” ones. I don’t need monitors that will help me become the next #1 producer or anything, it’s just my hobby (hence why I don’t think I’m gonna by a separate subwoofer yet). Do you all have any advice before I make this purchase or is there anything else I should consider??? All I wanna do is be able to make better music and I assume anything will be better than doing it on beats headphones 😂 I have a 225 sq ft room so I believe these will be fine (the room isn’t treated).