In your position, I'd add enough to pay for 42" bar & two loops of chain. My oregon 42" bar will reach a 38" slice with 1/4" hole in center of sprockt, 1" sq. AL bar outboard. it is a one man op 4 me. The wood working neighbor to the back porch next to avatar, opined that I could ask whatever I wanted. He indicated supply & demand would come into play, since I'm the only person he knew of ,who cut these slices. There is a unique premium for what we manufacture from raw logs. Who else cuts live edge boards, planks, round table tops. Expand your perspective & pocket bulge a little. That 5 foot bar w/two loops was over $500 w/shipping prolly with a power head to spin that chain we end up with more funds invested than civilians are willing to put out for a few bits. i explain I've got $5k [my total set of equiptment] that is what it took for me to bring this to your logs. You can get just enough to do your own logs for this many times what I will charge to slice your logs. But my experience in doing this safely & accuratly isn't yours yet. Own your personal value into this unique individual effort customer wants from you. Please don't low ball yourself.