You are in Spain but you haven't said where? If you are in, or near, Barcelona try to get involved in the local te h scene. There are some great EU funded incub

You are in Spain but you haven't said where? If you are in, or near, Barcelona try to get involved in the local te h scene. There are some great EU funded incubators who would help cover all the parts of the business you don't already have expertise in, and also have a vested interest in raising your (marketing) profile. 18 months is optimistic in terms of runway. Try to raise the same again in angel/friends & family funding. It's much easier to do that now, at the beginning, than it is later on, when suddenly everything seems bleak. Very best of luck, P.