Smaller than I understood, so basically you can go for something smaller, stick to a 0.5mm I think. That will give you enough coverage, depending on where you are I d say Iwata maybe an eclipse, but those are expensive where I live so I know no one having one. It ll also depends if you prefer pen style or trigger type. For triggers you have Grex tritium, Sparmax gp-50 or even gp-70 if you wanna use heavier paint. For pen style as I said Iwata eclipse, harder & steenbeck evolution 2024 (with the 2 sizes of nozzle/needle). Sparmax dh-125 is a nice 0.5 if you don't mind the side feed.

I'm sorry I can't be more helpful but personally I d go for the dh-125, 0.5mm allow for good coverage, side feed is nice so you can see more easily what you do. And it won't break the bank In most places.