A very useful guide, just a few points.
I've recently set up a monster complex
(SPP XL, 5 MCrystal Fabs, 3 L Chelt refineries, 3 L Rastar refineries, 3 Ammo Factories, 2 Thunderbolt Missile Factories, 1 L Silicon mine 64 yield)
Points to consider......
SPPXL comes with 5 (count em) 5 docking clamps as standard (5 lots of 6)
so it would be useful to have the crystal supplying complex seperated from it to allow maximum trade.
End resource points (good eg ammo factories) only have one hub point, so your best bet is to connect your food factories in a line, and have one of these factories coming off each one, it looks very neat.
Missile factories seem to have 2-3 nodes, food factories (at least L ones) seem to have 4 nodes, three located together near the docking clamp and one at the end to allow a straight connection.
It's prolly already been emphasized but the resources your factory will sell are not neccesarrily those you want it to.
Currently my XLSPP has 300,000 spare energy crystals as it is producing quicker than the factories attached are using it, and I cannot sell the energy as it is counted as in intermediary resource.
It doesn't bother me as I use this energy for Jumpdrive fuel by docking a TS at the station and adjusting parameters till my TS is full of energy, but if you start off a factory complex the first factory you build should end up as a product.
It doesn't always work though as my silicon mine is now also an intermediary product
Sorry for the
