GN1TE:
Is there any module I could use that would allow me to get signal strength? At the same mhz of course. And would signal strength in any way allow me to calculate some sort of distance
An RFM22B or SI4432 which are SPI devices will provide an RSSI reading, but its of little value in even giving a indication of distance. Best you could hope for is to tell the difference between close and far way, whatever that might mean.