Great design!
I would recommend sticking with neutral colored garments (grey, white, black) but you could vary the location of the logo on specific shirt/hoodie/hat designs. Patches are a good consideration, as they can be stitched onto most other wardrobe pieces. Stickers are a cheap bulk item to have made.
I think those 3 will be the dominant colors that I'll buy. The white one is a bit difficult, I think I'll need a different backdrop to make the digital circuits pop out. What color would buy Grey white or black shirt?