If low on funds you could always do the Jeep Grand Cherokee steering box. It will work on my car anyways, i assume it does on a 72 also.
As far as suspension i wouldn't dump my money into the ridetech shocks, there is no need for it if your just cruising around, i would lean more towards something like Bilstein HD shocks and SPC springs.
$350 for all four shocks
http://scandc.com/new/node/677
$300 for springs
http://scandc.com/new/node/104