Hi,
I have seen the RFP of SOFTWARE FOR AUTOPOS. I conclude that this is not only a POS but an ERP, CRM and employee management system too. Thus, it is not at all small to be fit in your mentioned budget. I can attach my proposal after you respond to my message because this is freelancer.com's limitation.
The Phases you have mentioned could not be completed with in the mentioned timelines.
Moreover, it can not be 'offline' (as you stated). It has to be an e-POS and connected with in LAN. But yes, there should be a server from where all the trasactions validated. I will need all the documentations and keys for Hardware SDK’s and API integrations during the development.
Lets discuss.
Regards,
Mit-