first off, i dont think there is a breath in you that would agree on using a 5" spacer on your truck.....no-one that knows trucks and lifts would.
second, the kit costs nearly 700$ plus shipping. for spacers? nah...ill pass and use that 700 towards the right kit.
im not bashin ya dodge15004x45.9 in any way so dont take offence but i think if you would have opened the link and saw what the kit consisted of for the price your paying, you would agree.
he asked for opinions on the kit...i gave mine

 

could you recommend a kit for me to buy cowboy? or anyone i wanna keep it around 800 cause i barely do enough offroading that i need anything serious! but i definatley wanna be rolling on some 35's and be able to flex a little.