As a followup to show how you can integrate the 5 in 1 power box to one of the 45 watt solar panel kits along with an explanation on how the system can be scaled up in stages as you can afford the upgrades. The actual technical skill level on putting something like this together ought to literally be child’s play, I would say along the same level as a 9 year old who can assemble his own electric train set of science fair project. By no means is this the type of stuff that normal adults should expect to be required to hire an expert to put together. This should be considered a good starting point for someone putting together a reasonably portable off grid power system. Next you would ad one or two car batteries and then maybe a more powerful inverter and at any point more panels (up to six max until you have to change out the charge controller).