I'm looking to buy two 5-6 feet tall cactii plants and have a few questions. Picture a well sunlit room with a double standard window and a radiator just underneath in the center. I want to put the cacti plants in the two corners just left and right of this window. 1 - Will it be enough sunlight in the room even though there may not be any direct sunlight? 2 - Will the radiator be a problem (just in the winter of course). 3 - Room gets hot in the summer, so I assume more watering is needed? 4 - I've seen 6 foot Peruvian Cactus for $250 in NYC. Is 250 a fair price for 6 feet? 5 footers seem to be signifantly cheaper, about $135-$150. 5 - One of the cacti plants I looked at had a one inch cut/slice on the top... Will it rejuvenate? 6 - How rapid will the cactii grow? If I keep it in the same pot, will that have an effect? I have 8 foot tall ceilings... 7 - If you're in the NYC area, know of any GOOD nurseries? That's it for now... thanks! Jason