Is it possible to hard wire that switch to echo mode?
Absolutely. Just leave the toggle switch out and jumper the top two rows of pcb pads where the switch usually goes. I.E. jumper switch pads 1to 2, 4 to 5, and 7 to 8 with the switch lugs being named like this:
1 4 7
2 5 8
3 6 9
so if i can do that, how can i get both the ping time and the pong time on one pot instead of being spread out on two? is that even possible? could i just run both sets of wires to 1 pot?
Not with a normal pot, but you can do it with a dual ganged pot.http://www.buildyourownclone.com/storepots.html
Order the B100K DUAL GANG 16mm pot. Put a 47K or 56K resistor across lugs 1 and 3 of each gang of the pot to knock it down to 50K, and wire each gang to the pcb. Done!