John, sorry, I don't have any experience with micro-inverters, though I agree that they are a very attractive concept.
Grid tie inverters are pretty standard fare these days, and I've seen "grid tie micro-inverters" advertised, but I don't know if they would meet your local codes or any codes, for that matter. The auto-shutoff feature, to me, would seem absolutely vital. Protecting human life should be a top priority.
Many solar companies have help lines to assist you in designing a system, you might look into that. Just be aware that their knowledge base is likely limited to their offering and may not be applicable to the offerings of other vendors.
You probably already know this, but I'll state it for the sake of others reading the thread. One of the main benefits of micro-inverters is limiting the length of the low voltage DC cables, thus limiting cable losses. Higher voltage and AC have far lower losses than lower voltage and DC, on the same cable size, so micro-inverters, installed very close to the solar panels, convert 12,24,48 volts DC to 110/220 volts AC and that AC is what traverses the long cable run to the breaker panel and building distribution. This is a basic design concept behind efficient solar installations. You always want to minimize the distance the low voltage DC needs to travel, due to losses in the cabling (or the high cost of big gauge cabling) .
Your panel outside, micro-inverter inside is intriguing, if you could do it with very short cable runs on the low voltage side (between the panel and the inverter). Not knowing your design intent, I don't know if it will work well. In my mind I envision a lot of holes in the roof, to keep the runs short, and roof + holes usually = bad. But there are far brighter men than I in this world, and you may have a better plan.