Well I had no idea that the work a node does is so intensive, I always thought the miners are doing the heavy work and the nodes are just picking up those few kbytes of traffic and adding it to the chain...

I am still eager to contribute to the network since I have a fast internet plug. I will think about investing in a small PC to do the job..

But I am still interested in this openwrt (even if a brick my router ), if anyone has more experience or thoughts please give some input