Vessels going thru the canal have to be able to maintain IIRC 5 knots. You might need 2 trolling motors. or you could add a paddle
wheel driven by a stationary bike.
Don't forgot to stop by the Galapagos. If you don't have time to stop at least go past and look at them. Easter Island too. You could see the Moai (moe-eye) from the coast.
If you need any info on customs and/or piracy check noonsite.
Have fun