Irrespective of the wonderful ideas that you have and though you have the prototypes working perfectly fine it is still impossible to start implementing the idea by self. You should leave the job and soon after you leave the job you should be able to meet the expenses that would trouble you every month. If you are married then life become miserable if you leave a job that is paying you a decent salary to end of the month. Everyone would suspect your mental ability as they would all misunderstand you for leaving the job. Everyone would suggest a best psychiatrist in the city so that you could join back to the job.
After having overcome all the discussions with the family members the next challenge you would have is with the banks sanctioning the loans. Before you leave the job you should apply for personal loan or the mortgage loan so that there are no delays in getting these loans sanctioned. However, if you delay in applying for the loans, then the chances for the loans getting sanctioned would be less. Especially the personal loan has no chances. Finally, you should and must consult the bury mortgages who could help you get the loan.
The experts would help you with all the paper work that would be required for availing the mortgage loan. Also, there is a chance that they would suggest you to apply the mortgage loan even before you leave the job as self-employed mortgage loan would be complicated to get approval than the normal mortgage loan. If you do not want any sort of additional benefits of applying the mortgage loan on self-employment grounds then you better apply for the same a little early so that no complications are faced by you.