LED Strip and digispark
It seems to me that you are going to use a white bread board for such a circuit and I'm not recommending doing that at all due to the huge amount of current intended to power up your LEDs. And I would recommend that you design your circuit on a stand alone PCB to consider the relationship between applied current on tracks and track width. Also I would recommend using Heatsink (TO-220 Package) to allow your MOSFETs drain some of the heat generated from them to avoid their failure.