Thanks for the information Trent, fertilizing is going to be my main problem, I do have an idea about NPK also phosphorus, magnesium and trace elements but I have no experience in applying these. I'm more of the gardener who throws fertilizer into the soil tills and plants an annual crop. I will no doubt learn more growing indoors.
I have known about the urine for a long time and love the idea (Not in a strange kind of way ), potatoes are something I would like to experiment with maybe not for eating but for seeds. Seed potatoes are generally grown in tissue cultures so I believe this may be feasible.
Right now I have created myself a building challenge as I'm growing completely indoors in a confined space, the area I grow in doesn't get very warm. I'm using CFL bulbs. I did believe I would overcome this problem by growing enclosed and insulated and the heat from the light bulb would be enough but I completely forgot about ventilation, maybe recycling the air so most of the warm air re-enters growing area providing enough CO2 for plant growth. I should have an old 12V computer fan around which might be okay connected to any old 12V power supply (phone charger) provided the amperage isn't too high.
As for my chillies, regular topsoil may not suffice as it could break down over the years allowing very little air to contact the roots and create a clay like water-logging. I was considering 3 parts topsoil to 1 part peat and 1 part sandy gravel for a soil which allows good drainage. What do you use for indoor soil Trent?