If you are looking for a front and back stroller, maybe you would like to see if this one suits your budget. http://www.cutebabypalace.com/product/twin-techno-plus-red/
Hi, perhaps you could try the Miracle Zappy X? Looks as though it fulfils most of your requirements. Details available at http://cutebabypalace.com/product/miracle-zappy-x/