if you want big plants with big seed production I would check out www.overgrow.com They are much more knowledgeable about strains and seeds then they are here, this is more of a social gathering place. you can get plants to produce 10,000 seeds+ per plant but you'll need 3 1k watt hps lights (not cheap). of course if you live out in the middle of nowhere outside is an option.
ok your going for the not typically crossed strains right away, since your just starting out I would just stick with the ''pure'' strains unless your filthy rich and have the bucks to promote a whole new strain, look at the current seed banks that have been estalished, that is what sells and is know to the growing public. I would love a bubblegum-orangebud-blueberry-whitewidow however.