Customize suitecrm , add sms Plugin

I want to customize suitecrm , add sms features . Single and Bulk Text Messaging. Grouping Functionality. Single click SMS delivery to thousands of numbers. SMS Scheduling (Sending SMS at a designated time and at particular event). Online Group Management. MIS Reports. Add printer for invoice and receipt generation. Course Details - Add Course Details [like course name, duration, Fee etc.,] - Edit / Delete Course Details Marketing Enquiry Details - Add Enquiry details like name, phone, enquired course, Source [Email, Field, College Activities, Phone, In house] ,etc., - Edit / Delete Enquiry Details - Set Follow up Reminders - Add Follow up Feedbacks - Search enquiry by keyword like name, phone. Student Registration - Add student details like name, phone, course, doj, No. of Installment etc., - Edit / Delete Student Details - Generate bill , Receipt for the student - Automatic Reminder option for the next installment Bill Details - Add Bill Details [Billno, student id, payment mode, installment, total amount, amount to be pay, balance amount, Date, Due Date] - Edit / Delete Bill Details - Bill Print Option - Automatically highlight the over due reminder bills - Search Bill details by keyword date, student Receipt Details - Add Receipt Details [Receipt no, student id, name, payment mode, installment, total amount, amount to be pay, balance amount] - Receipt Print Option - Edit / Delete Receipt Details - Search Receipt details by keyword date, student Reminders - Add Fees Due Remainders No of days - Add Enquiry Follow up Remainders No of days - Edit / Delete Enquiry Follow up Remainder - View All Remainders - View Remainders by date wise - View Remainder by amount wise Reports or system Analysis: - Day wise Marketing report - Month wise Marketing report - course wise Enquiry report - Payment Pending Report by Date wise - Payment Pending Report by course wise - Payment Pending Report by student wise - Fees Collection Repost by date wise - Fees Collection Repost by course wise - Fees Remainders Report - Due wise collection report