That's a very nice looking set up you have there.
Just a couple of words of warning, whilst your sharks and Plec are small they are fine but as they grow they will make keeping a planted aquascape as you want it more difficult.
I found that as the sharks get bigger they tend to get more nervous and will dart around knocking into things and with that much wood they will damage themselves.
Also, once the plec is bigger although a gentle giant will 'accidentally' up-root plants.
Mine grew to about 12"-14" in a 5 foot tank at was very funny, he would swim upside down at the surface for me to drop algae wafers straight into his mouth, even in daylight hours, the trouble was he was like a foot long bull-dozer, if he bumped into anything he would just swim harder until he pushed it out of the way, usually that meant finding floating plants in the morning!!