PIC16F873A Water Level Detector

Hi guys,
Glad to be writing my first post on this forum. For past few days i have been planning a project "Water Level Controller " using PIC16F873A. Now i know there r many such projects on net but this one is gonna be little different. The design requirment is such to be implemented at my home itself.
The description goes like this:-
MODULE1 : Take reading through Ladder ckt consisting of 5 REEd switches and resistors on AD port and display 5 readings. 8-leds for Debugging ADC . Rf Tx.
Module 2 : Rx data from Mod 1. Display on LCD. on Two Critical levels make a short but good audiable sound.

This is gonna be my first PIC project so all the suggestions and guidance r most welcome ( I know i will be needing that a lot ). I am trying to simulate it on Proteus for now. Lets see hat comes up.

Also i want this system to be power efficient so i am thinking of implementing Sleep mode for Receiver Module activated by external intr through a switch. Any ideas?