Tony, i'm not sure exactly how many I have. Last week, the appliance man came to fix the dryer. He looked outside and was amazed. He asked if I could show him around. I did and he just laughed and said, "what an investment".
As for soil, I get a half a pallet of UPM and a half a pallet of Pete's mix. I also make a mix of peat moss, Cow, mushrrom, perlite, and pine bark fines. I'm experimeting with making my own cheap mix next year using home-made compost, top soil and sand. I found top soil for $6 bucks a cu yd. I haven't check sand prices. I'm getting ready to buy a leaf chipper and compost tumbler this month. The plan is to start mixing the 3 in December and store it out back until I need it. The mix sounds heavy and it is. I'm converting all pots to self watering. Figs grow so much better in self watering pots.