[QUOTE Are there better/easier wireless modules I can use?[/QUOTE]
U Can go for cc2530, series modules . But they support SPI.
Also, The modules u r using r not that much reliable. They r basically used to Tx ON-OFF pulses, which are used for door locking,etc.
The out of way is to Transmit the data more than once & receive the avg.
Ex. suppose u want to Transmit 'NAME'. ,
Transmit it as 'NNAAMMEE' & take/retrive the 0th,2nd, 4th & 6th location data from serial ISR. & Show it on ur display.